MILNET Brief
  Weapons for 2025 - 2/10/2005

"For non-state actors such as terrorist organizations, drug cartels, or organized crime syndicates, the LOV [locus of value] may be their leadership...Knowing what to attack has always been difficult, and it will become harder..."

- Hit 'em Where It Hurts: Strategic Attack in 2025, Air University White Paper for Vision 2025, 1997

Unmanned Space Vehicles ||  Space Based Weapons  || U.S. Anti-Satellite Systems



Futuristic weapons are always tantalizing for military buffs, and for decades a peek into the future has always brought awe and envy for those future forces.  At the beginning of the 21st century, that process is particularly interesting.  Especially now that some of the cloaks of secrecy have come off brainstorming sessions that occurred between 1996 through 1997 (and most likely continues today).

While not all services have made their plans public, a meeting of minds at the Air Force University has created something called Vision 2025, a look at what warfare would look like in the year 2025.  MILNET reported on this data at the time -- what was available at least.

At that time general references to UAV programs and so called "improved sensors" were about the most tantalizing in several papers written by officers ranging from young Cadets to young Lt. Colonels, reflecting the bright Air Force minds attending the Air Force's in-service think tank.  For instance one such article proposed the SCREMR, part of the Hyper Velocity vehicle concept.  Both technological and philosophical advances were proposed.  In fact, due to technology's movement forward, some are once again looking quite relevant.

MILNET is constantly answering emails on the topic of future weapons systems and usually our answers focus generally  on a particular system, not wanting to become a source for information that could be used by America's enemies in even a small part. 

Given that nearly a decade has passed and that many programs are well underway or have been rejected due to budget constraints, there is little danger today in looking at certain areas within the "over-the-horizon" thinking of those fine officers.  Besides, we are reminded, much of the thinking has slowly been released as documents have been declassified. 

Prompted by our own public survey of issues surrounding nuclear terror and sensors, we've found that our notes have led us back to look at Vision 2025 again (the reference to several documents of interest are in our Sources section below).

This brief will look at a particular set of areas all related to overhead systems related to space-based or even space-borne attack capabilities.  However, it should be noted that a number of the technologies included could be; nay should be adapted to use within the atmosphere or perhaps actually function quite well in low altitude if not zero altitude environments.

The brief will  cover in some detail the envisioned systems proposed by two white papers at Air University, "Hit 'em Where It Hurts: Strategic Attack in 2025 " and " Through the Looking Glass, Global Area Strike System."  The first paper actually builds upon technology concepts contained in the second, citing weapons systems and "global information systems" which appear to be central to the vision of warfare in 2025.

To be discussed in this  briefing are:

Acronym
Meaning
Description
DL
Directed Light (Incoherent)
The use of space based optical collectors and mirrors to focus solar produced light down on the earth for battlefield illumination, temperature changes in a small area, or even burning or melting of enemy gear
SBL
Space Based Laser
A space-based system which aims an extremely high power laser on ground or atmospheric targets from various orbit altitudes.  This technology can illuminate the battlefield with visible or near infrared light (picking a wavelength only our soldiers know and in which they can don special vision gear to allow only them to see the illuminated battlefield), alter temperatures in a small area, or also melt or burn an enemy's gear.  This category includes space-based (parked in space, also known as space-earth geometry), space-borne (carried into space) or ground-based (laser emanates from a ground station and is reflected by mirrors to its target back on the ground, also known as earth-space-earth geometry).
HPM
High Power Microwave
Also known as HPMW, the use of multi-megawatt or gigwatt class microwaves to raise temperatures in small areas or to deliver a focused and directed equivalent of an electromagnetic pulse (EMP) using non-nuclear weapons means.
EMP
ElectroMagnetic Pulse
Discovered in early atmospheric testing, the EMP effect can be created by using a nuclear blast high in the atmosphere (60 miles up will create an EMP effect on the ground covering an area about half the size of the United States!).  A conventional version using semi-directional methodologies is much more likely and work progresses in that area.
KEW
Kinetic Energy Weapon
KEWs are also found in artillery rounds or small missiles of various types such as tank killer shoulder fire or tank fired rockets, however a space-based or space-borne weapon has the unique advantage of Mach 25 entry into the atmosphere where slowing down is a consideration instead of trying to speed up to Mach 6 or more to effect high energy displacement (armor and the warhead both react on impact like liquids at those velocities).  This category of weapon also includes a rather novel approach of simply throwing large items down at your enemy, assuming you can steer and control them well enough to prevent fratricide -- think of big rocks the size of  large house or a series of container ship containers being dropped onto a convoy of tanks.
BM
Ballistic Missile
An older idea, the ballistic missile is still king in terms of deliverable "throw weight" and accuracies achievable in 2025 continue to make this technology extremely useful.
NPB
Neutral Particle Beam
Much different than lasers, this beam is produced by ion stripping and is neutrally charged, making it less susceptible to atmospheric conditions, the earth's magnetic field, and penetrates deep into enemy equipment or personnel.  It has the disadvantage of being required to loiter over the target as it cannot be reflected around like lasers.
ILL
Illusion
Don't laugh, there will come a time when holographs might be used to decoy or distract enemies on the battlefield, projected from space-based or space-borne projectors.  An adjunct to this area is conformal camouflage that alters the reflective properties of aircraft or ground equipment to 100% mimic  that which lies under or over the equipment rendering it invisible to the naked eye.

Also, the quote at the beginning of the brief makes it clear that a revolution in how we identify targets from a philosophical viewpoint must change as well.   And moreover, we may need to rapidly modify those choices based upon political or tactical opportunity.  Much like U.S. DoD officials saw a chance to take out Saddam Hussein and vectored bunker buster attacks at a perceived location for the leader who was deemed more important than structures or weapons systems (the attack failed unfortunately), real time considerations in future warfare may take place at the speeds of computation, requiring huge and speedy databases feeding Artificially Intelligent systems that make recommendations or are allowed to take action with only human observation taking place.

The briefing will touch briefly on sensors that could revolutionize the battlefield and future warfare as well.  MILNET also wishes to point out that much work is going on in the areas of UAVs (unmanned aerial vehicles) and UUVs (unmanned underwater vehicles).



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Common Terms

Before going into detail for these system, one should note that as usual, the DoD uses acronyms with wild abandon and in this area of exploration, there are no exceptions.  Below we list a few common acronyms taken from the Navy's NavAir Weapons Division and modified to add other's discovered in the course of this research.  Use the link to skip this section if it bores you.


Acronyms and Glossary

ABL -- Airborne Laser
BM - Ballistic Missile (ICBM or SLBM or SCUD type system)
COIL -- Chemical Oxygen Iodine Lasers
CPB -- Charged Particle Beam
DEW -- Directed Energy Weapons
DEW-V -- Directed Energy Warfare - Vehicle
DL - Directed Light (incoherent as in sunlight)
EMI -- Electromagnetic Interference
EMP -- Electromagnetic Pulse
FEL -- Free Electron Laser
GARDIAN -- General Area Defense Integration Antimissile System
GROUND-BASED - Erected and operated from the ground or air-breathing area of atmosphere -- typically used to describe energy systems that beam energy up to assets in space for redirection back down to the enemy's position.
HEL --High Energy Laser
HIRF -- High-Intensity Radio Frequency
HPM -- High Power Microwave
HPRF -- High Power Radio Frequency
ILL - Illusion (as in hologram or modifiable reflective paint on surfaces)
KEW - Kinetic Energy Weapon (high density warhead mated to ultra high velocity rocket or orbital reentry vehicle)
LCMS -- Laser Countermeasure System
LLDR -- Lightweight Laser Designator Rangefinder
MIRACL -- Mid-Infrared Advanced Chemical Laser
MODS -- Mobile Ordnance Disrupter System
NLW -- Non-lethal Weapons
NPB - Neutral Particle Beam weapon (stripped ions of very high energetic characteristics)
NNEMP -- Non-Nuclear Electromagnetic Pulse
SBL -- Space-Based Laser
SPACE-BASED - Assets launched into and reside in space for the majority of their mission time
SPACE-BORNE - Assets launched into and reside in space for only a short time - typically some sort of aerospace/transatmospheric craft such as a TAV or Ballistic Missile.
TAV - TransAtmospherice Vehicle - a craft that is typically single-stage into orbit, traverses the globe while in orbit, and then reenters near the destination.  An early example that was cancelled was the National Aero-Space Plane (NASP), however today there are several replacement technologies (X-33, X-34).
THEL -- Tactical High-Energy Laser



DTIC Thesaurus: High energy lasers, such as continuous wave, repetitively pulsed, and single pulse, for tactical and strategic applications; Charged and neutral particle beam weapons. Includes energy generators, beam handling and control, target effects and countermeasures.

Directed Energy [DE]: (DOD) An umbrella term covering technologies that relate to the production of a beam of concentrated electromagnetic energy or atomic or subatomic particles. [1]

Directed Energy Device: (DOD) A system using directed energy primarily for a purpose other than as a weapon. Directed-energy devices may produce effects that could allow the device to be used as a weapon against certain threats, for example, laser rangefinders and designators used against sensors that are sensitive to light. [1]

Directed-Energy Protective Measures: (DOD) That division of directed-energy warfare involving actions taken to protect friendly equipment, facilities, and personnel to ensure friendly effective uses of the electromagnetic spectrum that are threatened by hostile directed-energy weapons and devices. [1]

Directed-Energy Warfare: (DOD) Military action involving the use of directed-energy weapons, devices, and countermeasures to either cause direct damage or destruction of enemy equipment, facilities and personnel, or to determine, exploit, reduce, or prevent hostile use of the electromagnetic spectrum through damage, destruction, and disruption. It also includes actions taken to protect friendly equipment, facilities, and personnel and retain friendly use of the electromagnetic spectrum. Also called DEW. [1]

Directed-Energy Weapon [DEW]: (DOD) A system using directed energy primarily as a direct means to damage or destroy enemy equipment, facilities, and personnel. [1]

Electromagnetic Interference [EMI]: (DOD) Any electromagnetic disturbance that interrupts, obstructs, or otherwise degrades or limits the effective performance of electronics/electrical equipment. It can be induced intentionally, as in some forms of electronic warfare, or unintentionally, as a result of spurious emissions and responses, intermodulation products, and the like. [1]

Electromagnetic Pulse [EMP]: (DOD) The electromagnetic radiation from a nuclear explosion caused by Compton-recoil electrons and photoelectrons from photons scattered in the materials of the nuclear device or in a surrounding medium. The resulting electric and magnetic fields may couple with electrical/electronic systems to produce damaging current and voltage surges. May also be caused by nonnuclear means. [1]

Free Electron Lasers [FEL]: High-energy lasers in which the relativistic electron beam energy is converted into optical energy. [2]

High Power Microwave [HPM] Weapons: Energy generated by a conventional electromagnetic apparatus, such as a radar transmitter, or released from a conventional explosion converted into a ratio-frequency weapon which causes the disruption of electronic systems. Usually an ultra-wide ban source focus due to target vulnerability considerations. HPMs can also cause human unconsciousness without permanent maiming by upsetting the neural pathways in the brain and/or death. [3]

Non-Nuclear Electromagnetic Pulse [NNEMP] Weapons: Non-nuclear EMP generating weapons mounted on cruise missiles or unmanned aerial vehicles (UAVs) which would disable enemy tanks and early warning radars would be invaluable. Such weapons when they explode would produce a momentary blast of microwaves powerful enough to disable all but special, radiation-hardened electronic devices. [3]

Particle Beam Weapons [PBW]: Nonnuclear weapons using a stream of high velocity particles or atomic or subatomic particles, excluding simulators for nuclear weapons-provided effects. [2]

Radio Frequency [RF] Weapons: A class of weapons which transmit short, high-powered pulses of electromagnetic radiation over significant ranges. [3]

Thermal Gun: A device that directs energy to produce heat, in concept similar to a microwave oven. [3]




New Weapons Concepts

This section will go through each of selected weapons to be discussed, describing the weapon system technology (in some detail but nothing that is classified), the advantages and disadvantages and whether the author of the paper discussing the system believes it is viable for the year 2025 and against a set of strategic attack goals laid out for the Air Force visionaries.

Note that we will use in a large extent, passages from the papers, para-phrasing and summarizing at will, with apologies to the authors.  It seems they were extremely lucid in their text and we don't presume we could do a better job.  This is not plagiarism, we simply acknowledge they said it best.  It will be clear where our language is used and where we have taken theirs.


Directed Light (Incoherent) Weapons

Basically using sunlight focused by optics on orbit and then directed downward onto the planet's surface of "low altitude" (relative to on-orbit) targets, or even at targets in orbit.  Film buffs will recognize this from a James Bond movie featuring Pierce Brosnan and Halle Barre ("Die Another Day").  As usual art is only slightly ahead of fact.
"Unfiltered by the atmosphere, the sun provides an enormous flux of normal (incoherent) light in near-earth orbit...Currently, this vast power source is tapped with solar arrays to power satellites.  It is conceivable that large focusing mirrors equipped with pointing and tracking and maneuvering systems could be placed in orbit to intercept and redirect solar energy onto the battlefield.  Single, very large mirrors (on the order of kilometers in diameter) or large arrays of smaller mirrors working in concert would be needed to make this concept useful.  Even in LEO orbit, these mirrors would need very high pointing and tracking  accuracies to qualify as precision aimed weapons.

Optical systems (primarily collecting apertures) currently under study have been limited artificially to a size of four meters for potential launch on the space shuttle.  The optical substrates are made from ultralow-expansion, right glasses as as Zerodur that are made lightweight with acid-etching techniques.  Larger, still lightweight structures could potentially be made from advanced aerogel materials, advanced ceramics (such as SiC), engineered composites, structurally supported optically coated plastics, suspended or spun reflective liquids (a liquid mirror), or inflatable mirrors (reflective films on inflatable substrate).  All these approaches have been demonstrated at the earth's surface with structures measured in feet or at most a few meters.

The most likely incoherent light weapon would consist of an orbiting array of mirrors in the 10-to 100-meter class.  With the proper constellation, the orbiting mirrors could intercept and redirect sunlight onto the earth's surface.  The simplest use of the system would be to provide battlefield illumination on demand.  Depending on the area illuminated, useful illumination could be provided by one to a 100 mirrors operating in concert.  By focusing the light from many mirrors onto a single spot or series of spots, battlefield temperature could be raised (a potential form of weather modification) and optical sensors (including human eyes) could be temporarily blinded.  Emergency electrical power could be "beamed" to lightweight solar panels erected to intercept the redirect sunlight.  To achieve more permanent effects, such as melting, as many as 100 mirrors might need to point and track on a signal hardened target for a period ranging from several tens to hundreds of seconds.  Spotlight beams from a few mirrors could also be used to aid search and rescue or special operations mission at at night.  Incoherent light weapon systems are limited in the rate at which they cause permanent damage by the fact that incoherent light, unlike coherent light (laser) light, cannot be focused onto extremely small spots." 2
The system envisioned has huge technology risks and costs, most of which involve the large structure's lift, assembly and maintenance in space. Like Hubbell, the system must carefully protect the optics from attack or simply space debris, and of course there are the usual in-orbit stabilization and aiming problems the Strategic Defense Initiative folks ran into.  In fact, this idea is an idea that may have had its genesis during the early years of SDI.  In any case, the author believes that if the structural and stabilization problems can be overcome, this technology is viable for 2025.


DEW -- Coherent Light (Lasers)

High power lasers are the most promising high-tech weapons for the future.   The Air Force BMDO program's boost phase intercept program has glommed onto the idea of hoisting a huge chemical laser in a 757 and placing it near an aggressor's ballistic missile launch point, and then simply "plinking" the launched missile before it exits the atmosphere...there is also speculation that this could be used against battlefield missiles that remain in atmosphere however that cannot be confirmed at present.  The program also known as ABL in its research form is supposed to be implementable in 2006, and the chemical laser is ideal for a space-borne, ground maintained and replenished attack system.  If the U.S. had a means to bear such a weapon into space in a timely fashion for the battlefield (a big IF), then the coherent light weapon would make a wonderful overhead attacker.  Obviously, this might also be mountable in a rather large and armored vehicle as well for ground to ground assault, or the ABL device might be trained on ground equipment for air-to-ground assault. 

The 2025 weapon also includes a ground-based system that uses a high power laser fired from a ground station, up to a satellite equipped with an steerable mirror, and reflected to another such mirror (or series) and then back down the earth. This is also known as earth-space-earth geometry (acronym happy Dod-ers might call this ESEG, but that is pure speculation.  The power of the ground unit has to be higher than the space-borne unit, as it must include enough power to overcome losses in the longer paths and mirror losses, however a ground station doesn't have to worry about power so much as it does about stabilization of the mirrors in space. 

A side note to this technology is that the same mirrors can be used as recon platforms by training an grounded astronomical telescope and peek at the reflection on the mirror.  By aiming the mirror at an enemy's position, you now have a wonderful overhead surveillance system.
"Lasers can be built as either continuous wave (CW) or pulsed devices.  "CW laser effects are generally described in terms of power density on target; pulsed laser effects are described in terms of energy density on target.  Although significant advances in this technology by both Ballistic Missile Defense Office (SDIO/BMDO) and the USAF Phillips Laboratory Airborne Laser (ABL) organizations, laser technology still needs further development.  To date [circa 1997 - MILNET], ground-based chemical lasers have been built in the megawatt class (the ALPHA laser).  Phillips Laboratory is also developing a hundred kilowatt-class short wave CW chemical laser (SWCL) based on the oxygen-iodine chemical system.  Weapons-class pulsed lasers have also been built, but primarily for effects and materials research.

CW Lasers

"For the space-earth geometry, multimegawatt power is required for a CW weapons laser, and hundreds of thousands of joules of energy per pulses is required for a pulsed weapons laser (depends on pulse length and pulse repetition frequency).  Total power or energy requirements are correspondingly higher for the earth-space-earth  geometry;  Constellations employing  only a few space platofrms (e.g., laser station for the space-earth geometry, laser mirrors for the earth-space-earth geometry) would have to compensate for the long slant ranges and correspondingly higher-atmospheric distortion by using even more powerful beams.  Lasers are not all-weather systems.  The laser wevelength, and therefore the laser gain medium and optics train, must be carefully chosen to permit good atmospheric propagation.  Clouds absorb and scatter laser light, removing power from the beam and distorting the beam's "footprint".

"...For visible and near infrared lasers, frequencies under study for use at long range, optics in the four to 20 meter diameter should suffice for a system in low earth orbit.

"...To achieve the status of a precision-aimed weapon, laser weapon systems will require extremely high levels of pointing and tracking accuracies for systems in low earth orbit.  It has, however, not yet been proven that large structures in earth orbit can be stabilized to the necessary levels.  This is a challenge of particular importance for a distributed laser weapon system consisting of an earth-based laser and a constellation of space-based mirrors.  In this scenario, the laser beam must be relayed by several space mirrors before it reaches some targets."

"Adaptive optics techniques have been developed to correct atmospheric distortions to low-power laser beam projected from earth to space and back again.  Adaptive optics systems developed to date depend primarily on deformable mirrors -- mirrors with small acuators that change the mirror's shape to pre-compensate the beam and correct anticipated or pre-measured distortions.  Further advances will be required in this technology, both in terms of bandwidth and number/size of actuators, to make this technology work for weapons class lasers.  Current advances in microelectromechanical machines (MEMS) and nanotechnology show great promise in this area.

"At low power, laser beams can be used as battlefield illumination devices, but with a potential added benefit over incoherent illumination.  Using an invisible laser beam (near infrared) at a specifically chosen wavelength and special tuned vision devices similar to night-vision goggles, one could render the battlefield visible only to friendly troops.  At low to medium power, laser beams can be used to designate targets from space, blind sensors in the laser's optical band, ignite exposed flammable objects, raise the temperature in localized regions (possible weather modification effect) perform as an emergency high-bandwidth laser communication system, and serve as a laser probe for active remote-sensing systems.  At slightly higher powers, the enhanced heating produced by the laser can be used t upset sensitive electronics (temporarily or permanently), damage sensors and antenna arrays, ignite some containerized flammable and explosive materials, and sever exposed power and communications lines.  The full power beam can melt or vaporize virtually any target, given enough exposure time.  With precise targeting information (accuracy of inches) and beam pointing and tracking stability, a full power beam can successfully attack ground or airborne targets by melting or cracking cockpit canopies, burning through control cables, exploding fuel tanks, melting or burning sensor assemblies and antenna arrays, exploding or melting munitions pods, destroying ground communications and power grids, and melting or burning a large variety of strategic targets (e.g. dams, industrial and defense facilities, and munitions factories) -- all in a fraction of a second.


Pulsed Lasers

"Pulsed lasers can also produce additional effects based on their ability to deliver rapidly a large amount of energy in a small amount of time.  Weapons-class pulsed lasers can vaporize target surfaces so rapidly that an effect very like a rocket firing occurs.  In essence, the target experiences a shove or impulse with every laser pulse.  If a strong enough impulse is delivered, the laser can discriminate between valid air or space-borne targets and lightweight decoys.  If the impulse can be delivered at an object's resonant frequency, cracking and breaking will occur.  Similarly, a pulsed laser trained on an object at the proper pulse-repetition frequency can stimulate infrasound vibrations, a potential from of nonlethal force projection that disrupts a target with penetrating, low-frequency oscillations.

"Perhaps more significantly, the large space-based mirrors of a distributed laser weapon system (laser is ground based) can also be used as a high-quality, passive remote-sensing system.  By training ground-based, high power optical telescopes on the mirrors, America's "eyes" can literally be carried to every corner of the earth.  Cued by a broader area search, this capability could be the primary surveillance, battle damage assessment, and targeting system for the laser space-strike weapon, or a valuable adjunct to America's existing national technical means.  With a large constellation of space-based mirrors in LEO, America's opponents cold literally never be sure when they are being watched, closing the existing coverage gaps.  Rather than depending on a few large, expensive assets that will inevitably become tempting targets, we can protect our surveillance and reconnaissance capability by increasing the number of "eyes" in orbit. 2

Clearly the authors believe high energy lasers whether ground-based or space-based will be in use by 2025 (assuming funding of course).

From the Strategic Attack paper, comes an additional point:

"Ground Based DEW (With space-borne mirrors)

"Constructing a DEW on  the ground and deploying targeting mirrors in space is the more flexible option.  Having the source of energy on the ground means the laser energy will not be limited by satellite power, or by available [i.e. limited fuel storage containers in space vehicles - MILNET].  The large targeting mirrors, built with lightweight structures, could employ wave front compensation to correct for optical imperfections." 1
This paper also acknowledges the stabilization and construction problems but appears to assume these can be resolved by 2025.

In an April 1998 USAF Air War College Paper, Lt. Col. William Possel cites a funded space based laser prototype program in development, the Space Based Laser Demonstrator.  If the program received funding since then, it is quite likely that a demonstrator might be ready for test deployment.  The initial purpose was for theatre ballistic missile defense, however, there may be numerous technologies that could be used in other force application areas. 18


Neutral Particle Beam (NPB) Weapons

The science fiction of yesteryear is no longer fiction.  Once again, James Bond fans will recognize this from a film ("Golden Eye").  Accelerator scientists have proven this technology is not only possible, but highly destructive.  However, like many new technologies, there are huge barriers to be overcome before it can be fielded and useful.  The biggest of which is in fact size, power, and weight. Imagine lifting the Berkeley labs particle accelerator into orbit.  This is a huge generator facility and a many mile long tunnel.  That simply cannot be done at this time.  Perhaps future nanotech will figure out how to shrink the power supply and tunnel enough to hoist this in space, but the likelihood is low. An alternative method for generating the beam might be discovered however.

There are other problems.  The NPB (the beam itself) is very energetic.  So much so that there aren't a lot of materials that can be used to reflect or redirect it once it is in operation.  It tends either to go through things (destructively usually) or get muted so quickly that it becomes useless.  Thus, unlike light weapons (lasers or sunlight), it cannot be mirrored around in orbit before being "shown" onto targets.  This means the NPB weapon system must "loiter" above the enemy's position in order to bring it to bear. Which is fine if you can put enough of these devices in orbit to exact coverage.  That of course is VERY expensive and is also a huge detractor from this technology even if you could get it up into space.

"A Neutral Particle Beam (NPB) weapon produces a beam of near-light-speed-neutral atomic particles  by subjecting hydrogen or deuterium gas to an enormous electrical charge.  The electrical charge produces negatively charged ions that are accelerated through a long vacuum tunnel by an electrical potential in the hundreds-of-megavolt range.  At the end of the tunnel, electrons are stripped from the negative ions, forming the high-speed-neutral atomic particles that are the neutral particle beam.  The NPB delivers its kinetic energy directly into the atomic and subatomic structure of the target, literally heating the target from deep within.  Charged particle beams (CPB) can be produced in a similar fashion, but they are easily defeated by the earth's magnetic field and their strong electrical charge cause the CPB to diffuse and break apart uncontrollably.  Weapons-class NPBs require energies in the hundreds of millions of electron volts and beam powers in the tens of megawatts. Modern devices have not yet reached this level.

"It does not appear feasible to develop an NPB weapon system as a space-based system even by 2025 due to the weight, size, power, and inherent complexity of the NPB.  Also, due to line of sight restrictions, the timeliness nd responsiveness would be low to moderate as the weapon waited for the target to move within view 
2 [NPB's rapidly lose power when mirrors are used to redirect, or the reflection doesn't work at all - MILNET ]

ElectroMagnetic Pulse Weapons

Much has been written about these types of weapons. They fall in four classes: nuclear explosion generated EMP, a moving shunt device, the vicarator device, and discussed in another section, high power microwave.

"An electromagnetic pulse (EMP) is a sudden, high-intensity burst of broad-band electromagnetic radiation.  The range of electromagnetic frequencies present depends on the source of the EMP.  The high-altitude airburst of a nuclear weapon produces an intense EMP which, because of the relatively long duration of the explosion, contains strong low-frequency components (below 100Mhz).  Conventional EMP devices built with explosively driven, high-power microwave technology produces a less intense, very short (nanoseconds) burst composed primarily of microwave frequencies (100Mhz-100Ghz).  The range of the EMP effect depends on the strength of the source, as the initial electromagnetic shock wave propagates away from its source with a continuously decreasing intensity [ inverse square law in physics  - MILNET]

"The gamma radiation produced by a fission or fusion bomb interacts with the atmosphere, creating a large region of positive and negative charges by stripping electrons from atmospheric gases.  The motion of these charges creates the EMP.  The pulse enters all unshielded circuits within range, causing damage ranging from circuit malfunction and memory loss to overheating and melting.

"Military useful EMP can also be created by mating a compact pulsed power source (gigawatt range), an electrical energy converter, and a high-power microwave device such as the "vircator" (virtual cathode oscillator).  An advantage of a conventional EMP device is that it can be triggered in a shorter amount of time, thereby putting more output energy into the higher microwave frequencies (above 100Mhz).  Since modern electronics operate primarily in these microwave bands, the EMP produced by conventional devices is potentially very effective in shutting down electronics.  Explosively pumped EMP devices such as the vircator have another advantage; it is possible to design them to focus their EMP in a particular direction.  Even a focused EMP effect produced by a conventional device will probably have a lethal radius measured only in hundreds to thousands of meters, depending upon the strength of the power source and atmospheric absorption (particularly at frequencies above 20 Ghz).

"Finally, the USAF Phillips Laboratory has produced compact plasma toroids with energies.  Directed at solid targets, the plasma toroids induce rapid heating at the surface, producing extreme mechanical and thermal shock as well as a burst of X rays.  The X-ray burst can also be used to generate EMP.  While the theory predicts the toroids will be rapidly dissipated by the atmosphere, there may well be a method of delivering high-energy plasmas to the vicinity of a target that does not involve long paths in air.

"A 100-kiloton burst at an altitude of 60 miles would create damaging EMP over an area equal to half the US, at 300 miles, the same burst would create EMP over an area equal to the entire US plus most of Mexico and Canada.  The gamma burst from a (purely hypothetical) micro-yield nuclear device might be used to create a more manageable effect."  [right, no can do...so you have to get down and dirty to create an EMP burst that is even somewhat manageable, and now you are into damaging the ground underneath as well from the blast? - MILNET]

"Due to its indiscriminate nature, nuclear-driven EMP is only appropriate in total war scenarios (zero flexibility).  The conventional EMP weapon, on the other hand, shows more flexibility in that it could be be directional and its effects could be localized.  Both forms of EMP weapons are at least moderate in their timeliness and responsiveness, since an EMP "bomb" could potentially reach its target within 30 minutes after launch (by means of a launch vehicles similar to the modern ICBM). The precision of the EMP weapon is relatively low -- it is generally useful only for area targets (e.g. enemy towns, large facilities, or a squadron of enemy aircraft.  The survivability and reliability of EMP weapons are moderate to high, particularly if the weapons themselves are ground based (as the payload of an ICBM or surface launched ballistic missile (SLBM)).  Finally, and most unfortunately, the selective lethality of EMP weapons is low.  The effect of an EMP burst on any given electrical system is highly unpredictable, since it depends in great detail on the precise geometry of the engagement, the exact design of the electrical system under attack, and even the current state of the atmosphere.  In sum, the conventional EMP weapon has very interesting possibilities as a potential future weapon.  However, the currently unpredictable lethality, limited flexibility, and questionable precision make it unattractive as the primary component of a space-strike weapon system in 2025."  [however, as  a possible nuisance or terrorist's weapon, it has high value - MILNET]

High-Power Microwave Weapons (HPM or HPMW)

The ability for RF based systems to jam or even destroy your enemies electronics systems has been a weapons idea for some time, with EM (electromagnetic) jammers being fielded in the Vietnam war.  This futuristic idea has a real basis in fact already, and thus improvements would seem reasonable to postulate.  Imagine the earth's atmosphere being a microwave oven, and you have an idea how scary this technology could be.  The idea is simply, hook up a massively powerful power source to a high-power microwave emitter and then direct it at equipment, buildings or even individuals.  You can disrupt, damage or destroy with this technology and since it is invisible radio frequencies, it is also quite frightening. Some might classify this as a terror weapon, not to far removed from the buzz bombs used against London in World War II, only those outside the damage area had any idea the attack was coming.

"A high-power microwave (HPMW) device also employs electromagnetic radiation as its weapon effect.  Not as powerful as nuclear drive EMP weapns, HPMW weapons create a narrower level of microwave electromagnetic radiation by coupling fast, high energy pulsed power supplies to specifically designed microwave antenna arrays.  Microwave frequencies (tens of megahertz to tens of gigahertz) are chosen for two reasons;  the atmosphere is generally transparent to these frequencies.  Unlike most EMP weapons, HPMW weapons produce beams defined by the shape and character of their microwave antenna array.  HPMW beams are broader than those produced by NPBs and lasers, and this space-strike weapon system does not require extreme pointing and tracking accuracies.  HPMW weapons can be trained on a target for an extended period of time, provided the power supply and HPMW circuitry can withstand the internal currents.  As a rough point of comparison, HPMW systems produce 100-1,000 times the output power of modern electronic warfare (EW) systems.

"This light speed weapon can be understood as a "floodlight" that bathes its targets in microwave radiation.  More directional and controllable than EMP, the general effect of this weapon on electrical systems is well described in the section on EMP.  Unlike conventional EW techniques, the effects of a HPMW weapon system usually persist long after the "floodlight" is turned off (depends on power level employed).

"While many electronic devices can be shielded using the same techniques outlined in the section on EMP weapons, most sensors and high-gain antennas cannot be shielded without preventing them from performing their primary functions.

"A space-based HPMW weapon must have an antenna or array of phased antennas with an area measured in acres to point and focus its beam properly on terrestrial targets.  The resources necessary to construct such huge structures could be expensive to lift into orbit, and difficult to assemble in the free-fall
[ weightless s- MILNET] environment.  Like the NPB, the HPMW weapon is a line of sight [ no mirrors - MILNET] device that must "see" its target before it can fire.

"The level of pulsed, electrical power required to produce weapon-level microwave fluxes is now becoming available (for ground-based systems). 
Compact, scalable laboratory sources of narrow-band, high-power microwaves have been demonstrated that can produce gigawatts of power for 10 to a few hundred nanoseconds [ more than adequate - MILNET]  Ultra-wideband microwave sources are less well developed, but research in this area appears promising.  A HPMW weapon should, however, be able to temporarily disrupt circuits and jam microwave communications at low power levels.

A space-strike HPMW system would consist of a constellation of satellites with very large antenna or arrays of antennas.  The farther out in space the constellation resides, the fewer the number of satellites required.  However, there is a corresponding increased requirement for more power and larger antennas.  Another possibility is to overlap "spot" beams from many smaller HPMW satellites on each target, gaining the benefit of high power on centroid (but a very much larger combined spot) at the cost of satellite  proliferation.  A useful distributed HPMW weapon system of this type might resemble the Iridium or Teledesic constellation of LEO satellites [ communications satellite systems in Low Earth Orbit - MILNET] (many tens of hundreds of satellites, however, and the HPMWs would not be small satellites).

At low powers, the HPMW weapon system is fully capable of jamming communications when pointed at the opponents receiving stations or platforms, in addition to its obvious uses against an enemy's electrical and electronic systems at higher power levels.  Since water molecules are also known to absorb certain bands of microwave frequencies, it is also possible a properly designed HPMW weapon system could be used to modify terrestrial weather.

Minute devices, if small enough, could be immune to HPMW weapons simply because microwave frequencies cannot couple enough energy into them to cause damage. ..Optical devices are inherently immune to microwave radiation, although the sections of optical circuits where light is converted back into current still have to be shielded. 

The HPMW weapon system is not deemed suitable for space-force applications in 2025." [ Only if you ignore the possibility of hovering over facilities -- this weapon system could be quite effective against non-hardened manufacturing facilities, hideouts, or opponent's bedrooms - MILNET]


Kinetic Energy Weapons

The Kinetic Energy Weapon uses extremely high velocities to "penetrate" its targets with catastrophic shock.  A 30 meter object falling to earth will ablate as it reenters, but its impact is equivalent to a 10 KT nuclear weapon and does not have the radiation effects.  Smaller devices have smaller impacts, but far exceeding a typical explosive warhead.  As the text below describes, there are two types, KEP which travel at above Mach 3, and HP which travel at around Mach 25.

"Kinetic Energy Weapons come in two classes related to their velocity -- The Kinetic Energy Penetrator (KEP) and the Hydrodynamic Penetrator (HP).

KEP

The KEP has a maximum impact velocity of 3 kilofeet per second (kfps), about the maximum speed of an SR-71 blackbird.  The KEP destroys the target by shattering it with an enormous blow.  SInce some areas of a target are more vulnerable to shattering blows than others, precise targeting is necessary for an effective KEP.

HP

The HP has a minimum impact velocity of 8 kfps.  When a penetrator strikes a target at this extreme velocity, both target and penetrator react to the collision as if they were fluids (their behavior described by hydrodynamic equations of motion).  The impact attacks the molecular composition of the target, spreading dense impact shocks at enormous speed.

"A nagging problem for KEW systems is the heat and shock generated on reentry.  This can effect the precise delivery of the weapon.  An exciting new concept has been proposed that promises to ameliorate this problem.  By concentrating a laser beam in the area immediately in front of the hypervelocity KEW, it is possible to create a laser-supported detonation wave (called an "air spike") that partially shields the KEW.  The air spike transforms the normal conical bow shock into a much weaker, parabolic-shaped oblique shock.  Researchers estimate that a properly designed air spike could decrease the effects of shock and heat on a hypervelocity object by over 75 percent (making Mach 25 seem like Mach 3)."

Finally, an interesting variation the more conventional KEW concept involves the use of meteorites as a weapon. 

"Naturally occurring meteorite at least the size of large houses (necessary to survive drag-induced heating in the atmosphere) could be intercepted in space and redirected to a terrestrial target. If done with sufficient stealth and subtlety, the impact could even be "plausibly denied" as a natural occurrence.  Meteorites 30 feet in diameter could be counted on to generate nuclear weapons sized explosions (20 kilotons), but without the lingering radiation.

Meteors can be hundreds of magnitudes more deadly than the KEW.  However, there are several significant shortfalls to meteorites as weapons.  They are hardly a timely weapon -- the war fighter must patiently wait for nature to deliver his "ammunition".
[ or you could go out and mine asteroids and have them handy nearby - MILNET]  The uneven shape and heterogeneous composition of meteorites makes it highly unlikely that they can be guided precisely to a target. [ or you could carve them into nice shapes after/as you mine them - MILNET]  Since it is also impossible to predict how much of the meteorite will survive the fall from space, meteors are best classified as an area weapons with a very uncertain radius of effect. [ - just drop fifty on the mountain range where Bin Laden is thought to be hiding - MILNET]

A few hundred KEW "storage containers" placed in LEO would make the timeliness and responsiveness very high (within a few minutes).  Precision and reliability would also be high.  Total destruction would be the only choice, unless used as a demonstration of power."
The authors go on to point out that due to the inflexibility in terms of destruction and inaccuracy of the large house sized objects used as KEW, that they would not be viable.  Smaller, more guidance oriented devices have already been proven effective and only funding stands in the way of this weapon system being deployed by 2025.  KEPs are part of the controversial National Missile Defense system being implemented by the U.S..  Interestingly, the idea was first proposed publicly by Ronald Reagan and and part of the famous "Star Wars" speech.


Space Sortie - The TransAtmospheric Vehicle as a Weapon

Being Air Force, it is not surprising that a manned system would find its way into Air University futuristic concepts. The various projects looking at single-stage to orbit concepts can be carriers of unmanned or manned systems.  The authors of the GLASS paper make it clear that there is still a proper place for manned systems, despite the costs and risks.  Got to have some pilots.  And human cargo.  The idea is to single-stage up into orbit with pilots and troops, or pilots and a plethora of dispensable munitions, race around in orbit, and descend on the enemy position from on high and at great speeds.   The whole operation would take 60 minutes from launch to attack.  This assumes that the crew and vehicle are on alert status and ready to launch in minutes.

We call the readers attention to another such concept, the SCREMER, the hypervelocity attack vehicle (manned or unmanned) proposed in yet another Vision 2025 paper 3

A more concise and understandable description of the TAV is found in the Strategic Attack paper titled, Hit 'em Where It Hurts: Strategic Attack in 2025 1 and we quote largely from that paper instead.


Transatmospheric Vehicles (TAVs)

"The TAV would be capable -- from an alert posture -- of arriving at a target anywhere in the world within one hour of notification.  Its weapons bay would be modular to allow several different types of weapons for increased flexibility.  TAVs returning from a mission could be serviced and ready to fly again in less than a day, and could be surged to fly multiple missions per day if necessary.

"The TAV platform capitalizes on several principles of war.  It is offensive, bringing the fight to the enemy on our terms.   The TAV provides surprise, striking enemy targets at any depth with little or no warning.  Additionally, it delivers massed effects employing precise firepower.  Just the F-117 carrying PGMs [Precision Guided Munitions - MILNET]  delivered on the principles of mass and economy of force during the Gulf War, the TAV will take this one step further.  This platform accomplishes multiple attacks over a diverse target set during a single mission.  Ultimately, with the appropriate weapons load, it can engage targets in separate major regional contingencies during a single mission.  In short, the TAV provides a timely threat to strategic targets anywhere on the globe.

"The vehicle must be designed to incorporate a modular weapon system.  This concept increases effectiveness by allowing the TAV to be used for a variety of military missions from force enhancement through force application.  These weapons modules are maintained in readiness, stored until needed, and then quickly loaded on the vehicle. 1
From the GLASS paper, we find some rationale for manned missions:

"Flexible response is best provided with a small CONUS-based fleet of TAVs [TransAtmospheric Vehicles - MILNET] equipped with a variety of payloads, including kinetic-energy weapons, compact laser weapons, and special forces squads.  Responding within a few hours of notification, a TAV can precisely deliver forces and/or adaptable human judgment to crisis locations anywhere on earth.

"...The class of platforms called "space-borne" platforms is the most flexible, since it can potentially begin is operation under direct human control within the terrestrial environment (on land, sea, or in the air).  Servicing and maintenance are less difficult for such platforms, because they can be held within the confines of sovereign US territory.  Their vulnerability is also reduced because they can be made highly maneuverable much more easily than a space-based system."

"...makes the argument for a manned space-borne platform called a TAV, the "Black Horse."  The biggest advantage of the manned TAV is that it is probably the most flexible platform yet proposed for space operation simply because it is under the continuous control of a human.  Given an appropriate design, the manned TAV could be quickly reconfigured to deliver special operations teams, high-value equipment and supplies, or a wide variety of munitions (in much the the same fashion as a high-speed bomber).  Most important of all -- the TAV can put a few well-trained people at the site of a developing conflict anywhere on Earth within 60 minutes from launch.

"The most important disadvantage of space-borne platforms is their relative lack of responsiveness.  A TAV can reach anywhere on earth within 40 minutes once it has reached orbit, but this cannot compare with a speed-of-light attack from a directed energy weapon in orbit above a target.  If a space-borne platform is not already hovering "near station", this single disadvantage may be fatal in an era when response times have improved to minutes or even seconds." 2


The GLASS paper does a fine job of summarizing the pros and cons for the various new weapons systems it describes, and we reproduce an easily read table:



DL=Directed Light (Incoherent)
SBL = Space Based Laser (coherent)
TAV= TransAtmospheric Vehicle (manned)
HPM = High Power Microwave
EMP = ElectroMagnetic Pulse (nuclear or conventional derived)
KEW = Kinetic Energy Weapons (fast or massive)
BM = Ballistic Missile (ICBM or SLBM)
NPB = Neutral Particle Beam
ILL = Illusion (White Light Holograms)




Other Weapons Ideas For the Future

The Strategic Attack paper focuses on military attack philosophy as well as the tactical/technological.  One of the concepts that it proposes is pure military theory, the concept of a Locus of Value -- LOV.  LOVs are a intellectual tool to help the war fighter figure out what and where to strike to gain the most effective and hopefully, war ending attack. For instance, the concept embraces the idea that if you "Hit them where it hurts the most" you will perhaps dissuade them from continuing to wage the battle. 

Different opponents have different LOVs.  An industrial nation which depends on that industry for its economy and welfare of its people will find factories and transportation to be critical and thus strategic attacks should be aimed at those facilities.  However, a terrorist group has no nation, and few important facilities.  A bomb factory may be a strategic target, but more important are the leaders.  Kill off all of Bin Laden's lieutenants and the man himself, and you might kill, for awhile, the groups ability to wage their war. 

In the case of personal attacks of this nature, it becomes more than academic to kill off a leader and his key advisors.  Thus we enter the near science fiction realms of new weapons.  Readers interested in our briefing on nuclear terrorism and sensor networks will find this all very interesting as well.


Sensors

MicroElectroMechanical Systems (MEMS) and nanotechnology promise new abilities to sense and detect that were, before their advent, impossible to reproduce.  Some animals have the ability to smell, for instance, things that a human cannot.  The first battlefield sensor could have been the use of bloodhounds -- admittedly used in criminal prosecution instead of prosecution of wear.

Now, however, through devices already available in medical engineering, subtle smells can be expanded for our detection purposes.  Like the bloodhound, we can technically "smell" out humans, and most important, distinct humans.   Also we can adapt the technology to "sniff" out chemicals, biological agents, or even "taste" residues and materials that are related to weapons grade or dirty bomb grade radioactive toxins.

Given a well built, AI driven and flexible Global Information System (connected to what the authors call the Delphi database), we could then track people and vehicles anywhere our sensors can "see" from overhead or aboard aircraft or ground vehicles, and then even target those individuals or vehicles.

Science fiction fans might recall the idea of a "hunter-seeker" weapon that can be tuned to a persons DNA and then fired from around a corner, with the projectile flying around and never losing its target victim and finally "taking them out" (Dune, Frank Herbert, circa  1960s).

Well, that time  is fast approaching.  One of the visions for 2025 is that information structure that can provide the inputs to enable detection of discrete humans, given only a sample "sniff" acquired before hand.  Similarly, the concept of sniffing out chemicals, toxins, or "tasting" materials are all on the table at present.

"The problems of the  next decade are to identify the relevant database, to devise methods for collecting, analyzing, and correlating them, and to construct the needed communications an distribution architectures...Advanced AI is required to correlate the mountain of unorganized data located throughout the information domain.

"Current target acquisition systems for strategic attack depend heavily on sensors that only provide image data from the infrared and visual spectrums.  Having different types of sensors in 2025 provide complementary data for the AI network to analyze and helps detect an adversary's LOVs."  (see, hear, smell, taste, and touch -- or equivalents)

Smelling Sensors.

"In 2025, olfactory sensors will be similar in size to microscopic hearing sensors.  Unlike the LIDAR system that detects signatures of aerosol clouds, smelling sensors can detect the actual chemicals themselves.  Organic thin film coatings on tiny platforms will contain prefabricated "molecular buckets" to trap suspected chemical molecules.  If the chemical is present, the bucket fill up, changing the organic property of the platform.  When irradiated by ultraviolet or X-ray energy, these organic changes can be scanned and analyzed by overhead sensors.

"Another novel smelling technology available in 2025 involves tracking humans via genetically-linked body odors.  These odors, undetectable by the human nose, can be sensed by bundles of sensors that then transmit the data to the neural network portion of the Delphi database.  Since each sensor reacts differently  to chemical compounds, specific compounds can be identified.  If it is possible to get an odor sample of an enemy leader, then olfactory sensors could be used to detect and track the human LOV."  [ or target with a seeker type weapon - MILNET].

Tasting Sensors: 

"Sensors that transmit data after tasting an LOV can provide discriminating clues for the Delphi database in 2025.  Tasting sensors can be prefabricated to detect--and attach to--certain types of surfaces, similar to the way smelling sensors have prefabricated molecule buckets.  A variety of tiny taste sensors could be dispersed on an LOV, and then irradiated and scanned to gather data.  Taste sensors designed to detect aluminum would stick to aluminum aircraft wings but fall off wooden decoys.  Other sensors could taste buildings or vehicles for radioactive fallout, chemical residues, or biological agents.

"If sensors can be designed to attach to specific compounds in 2025, they can be designed to attach to specific people.  Like prickly cockleburs, tiny sensors would cling to certain humans, effectively tagging them for continuous tracking via overhead platforms.  If a human LOV cannot be tagged specifically, certain items common to that person, like vehicles and clothing, could be tagged for tracking.  Possessing  the ability to detect and track a human LOV adds greater flexibility to the strategic attack process." 1



Conclusion

While many of the weapons systems described have huge costs, technological barriers, and risks in implementation, they never-the-less show the forward thinking of at least some of our military cadre.  And clearly, if only a handful (perhaps even just one) of these systems are deployed, warfare will once again go through a new revolution.  With several implementations warfare will be nearly unrecognizable at some points in the battle, with beams from the sky taking out the tactical genius General while he sits in his mobile office or at his home in bed, without harming his assistant or wife nearby.

Video game player are encouraged to look at Dune Emperor and note the use of some of the battlefield and overhead weapons, some of these are very prophetic. While 2025 maybe a little soon for some of these weapons, the timeframe is not TOO soon, and MILNET will not be surprised to be looking at such weapons by the close of 2040.  As the Strategic Attack paper states:
"The targets identified for strategic attack vary widely based on the adversary and the situation , and require a diverse arsenal of capability.  This arsenal must include means to affect hard and soft LOVs directly/or indirectly, using lethal or nonlethal power, and within an immediate to indefinite time frame.  Futuristic engagement systems and technique such as holographic projection, noise and gravity fields, biomedical operations, psychological operations, military deception, and information attack are all possible." 1




Sources:
  1. Hit 'em Where It Hurts: Strategic Attack in 2025, (PDF 677KB) Air University White Paper submitted to Vision 2025 (MILNET Mirror)
  2. Through the Looking Glass, Global Area Strike System (PDF 766KB), Air University White Paper submitted to Vision 2025, (MILNET Mirror)
  3. A Hypersonic Attack Platform: The S3 Concept, Air University White Paper submitted to Vision 2025, 8/1996 (MILNET Mirror)
  4. AF Vision 2025 White Papers, Directed Energy Weapons, Naval Postgraduate School, undated
  5. Directed Energy Weapons Acronyms and Glossary, NavAir Weapons Division, undated
  6. DOD Laser Master Plan (PDF 347KB), U.S. Department of Defense, 3/24/2000 (MILNET Mirror)
  7. HELSTF, U.S. Army's High Energy Laser Systems Test Facility (White Sands New Mexico)
  8. Boost Phase, Directed Energy Program, U.S. Ballistic Missile Defense Office / Missile Defense Agency
  9. Targeting the Human with Directed Energy Weapons, Dr. Reinhard Munzert, 9/6/2002"
  10. Non-Lethal" and Directed-Energy Weapons, Datafilter Research, Allen L. Barker, PHD., undated
  11. UAVs - MILNET
  12. UUVs - MILNET
  13. Sun Catchers Tuned to Crank Out the Juice, R.Colin Johnson, EE Times, 11/22/2002
  14. Electronic Warfare/Directed Energy Weapons, FAS, undated
  15. Directed Energy Weapons:  A Bibliography, Naval Postgraduate School, undated
  16. Star Tek:  Exploiting the Final Frontier, Counterspace Operations in 2025, USAF Air University Vision 2025 Study, 8/1996
  17. USAF Transformation Flight Plan, Future Concepts and Transformation Division, HQ USAF/XPCX, 12/29/2004
  18. Laser Weapons in Space: A Critical Assessment, Lt. Col. William H. Possel, USAF Air War College Paper, April 1998.
  19. SPACENET:  On Orbit Support in 2025, Air University White Paper submitted to Vision 2025, 8/1996
  20. The Next Generation of Weapons, James J. Carafano and Andrew Berman, Fox News, 8/04/2006
  21. E-Weapons: Directed Energy Warfare in the 21st Century, Leonard Davis, Space.com, 1/11/2006
  22. Northrop Grumman Successfully Fires Most Powerful, Continuously Pulsed Illuminator Laser to Date, Northrop Grumman Space Technology, October 12, 2006.
  23. Boeing Completes Critical Design Review for Space Based Space Surveillance, Boeing, Intelligence Summit Blogspot, 1/10/07



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