- / Acutronic
- Accenture Ltd.
- Action Target
- Advatech Pacific, Inc
- Aerojet
- Aerospace Corporation
- Aerovironment
- Advanced Armament Corporation (AAC)
- Advanced Integrated Systems
- AECOM
- Aegis Defense Services
- Aimpoint
- AirScan
- Airtronic USA
- Aivea Corporation
- Allen Vanguard
- Alliant Techsystems
- / Allied Container Systems
- AM General Corporation
- American Dynamics Flight Systems
- American Ordnance LLC
- American Petroleum Institute
- Analysis, Computing & Engineering Solutions, Inc. (ACES, Inc.)
- Antonov Airlines
- Applied Research Associates Inc.
- Arcturus-UAV
- ARINC
- Argon ST
- ArmorSource
- ArmorWorks
- Artis LLC
- ASSETT, Inc.
- Astronautics Corporation of America
- Aurora Flight Sciences
- AV-Optimal Defense Consultancy Service
- AVX Aircraft Company
- BAE Systems plc
- BAE Systems Inc.
- BAE Systems Land and Armaments
- BAE Systems Electronics, Intelligence & Support
- Land Systems OMC
- Ball Corporation
- Ball Aerospace & Technologies Corp.
- Barrett Firearms Manufacturing
- Battelle Memorial Institute
- Bechtel Corporation
- Benelli USA
- Berico Technologies
- / BDM Corporation
- Blazeware Inc.
- Black Knight Technology Inc.
- Boecore
- Boeing Company
- Boeing Sikorsky Comanche Team
- Boeing SVS
- McDonnell Douglas
- Insitu
- Booz Allen Hamilton
- Boston Dynamics
- British Nuclear Fuels Limited
- Brogden Enterprises, Inc.
- CACI International Inc.
- Carlyle Group
- Carnegie Mellon University
- Ceradyne
- Charles Stark Draper Laboratory
- Chenega Federal Systems
- CNA Corporation
- Colt Defense
- Concurrent Technologies Corporation
- Critical Solutions International
- Crye Associates
- CSA Engineering
- CSI Combined Systems
- Computer Sciences Corporation
- Cubic Corporation
- Decibel Research Inc.
- Defense Technologies Inc.
- Delta Intelligence & Security
- DEW Engineering
- Digital System Resources Inc.
- Dillon Aero
- DRS Technologies
- DynCorp
- Dynetics, Inc.
- EADS
- Exnovo Solutions, Inc.*
- Eurocopter
- American Eurocopter
- Airbus
- Earth Class Mail
- East/West Industries, Inc.
- Ensign-Bickford Aerospace and Defense
- Edison Welding Institute
- Elbit Systems
- ENSCO, Inc.
- // Environmental Tectonics Corporation
- Ernst & Young
- Evergreen International Aviation
- Exxon Corporation
- Fabbrica d'Armi Pietro Beretta
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- Fabrique Nationale de Herstal
- FLIR Systems
- Fluor Corp.
- FGM Inc
- F M C Technologies
- Force Protection Inc
- Foster-Miller, Inc.
- Foster Wheeler Ltd.
- Foundation Health Systems Inc.
- G4S plc
- GB Industrial Battery
- Gemini Industries Inc.
- General Atomics
- General Dynamics
- Gulfstream
- MOWAG
- General Dynamics Electric Boat
- Bath Iron Works
- General Electric Military Jet Engines Division
- Geo-Centers Inc.
- Glock Ges.m.b.H.
- Goodrich Corporation
- Gordon and Castille Industries
- Georgia Tech Research Institute
- Harris Corporation
- / Halliburton Corporation
- Health Net, Inc.
- Heckler & Koch USA
- HESCO USA
- Hewlett-Packard
- Honeywell
- HS Produkt
- Humana Inc.
- Hybricon Corporation
- IBM
- Industrial Machining & Design Services, Inc.
- Infotech Aerospace Services (a Pratt & Whitney joint venture)
- Insight Technology
- Institute for Defense Analyses
- Intelsat
- International Resources Group
- iRobot
- Israeli Aerospace Industries
- Israeli Military Industries
- ITT Exelis
- ITT Research Institute
- Jacobs Engineering Group Inc.
- JGB Enterprises, Inc.
- Johns Hopkins University
- Kaman Aircraft
- Kearfott Corporation
- Kellogg, Brown and Root
- Knight's Armament Company
- Kongsberg Defence & Aerospace
- L-3 Communications Holdings, Inc.
- SYColeman
- Brashear
- EOTech
- Lockheed Martin
- Longbow Limited Liability Inc.
- LRAD Corporation
- M9 Defense Systems
- MacGregor Group (part of Cargotec corporation)
- A.P. Moller-Maersk Group
- ManTech International
- Massachusetts Institute of Technology
- Maytag Aircraft Corporation
- // MBDA
- McQ Inc
- Menatek Spare Parts
- Metal Storm
- Milkor USA
- Mission Essential Personnel
- MITRE Corporation; also see ANSER Institute for Homeland Security
- Mitsubishi
- Motorola Inc.
- Mustang Tech Group
- Natel Electronic Manufacturing Services
- Navistar Defense
- Nextel
- NexGen Data Systems, inc.
- Nichols Research Corporation
- NITTOH KENSETSU CO., LTD.
- Northrop Grumman Corporation
- Northrop Grumman Electronic Systems
- Northrop Grumman Information Technologies
- Northrop Grumman Integrated Systems
- Northrop Grumman Mission Systems
- Northrop Grumman Newport News (formerly Newport News Shipbuilding & Drydock Company)
- Northrop Grumman Ship Systems
- Northrop Grumman Space Technology
- Northrop Grumman Technical Services
- Ocean Shipholdings Inc.
- Oceaneering International
- Olin Corporation; also see John M. Olin and John M. Olin Foundation
- Orbital Sciences Corporation
- Oshkosh Corporation
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- Osterhout Design Group; see also Ralph Osterhout
- OT Training Solutions
- Para-Ordnance
- Perot Systems
- Picatinny Arsenal
- Pinnacle Armor
- Point Blank Solutions, Inc.
- Precision Castparts Corporation
- Quantum3D
- QinetiQ North America
- Raytheon
- BBN Technologies
- JPS Communications
- ELCAN Sighting Systems
- Remington Arms
- Revision Eyewear
- Rock Island Arsenal
- Rockwell Collins
- Rolls-Royce plc
- RONCO (de-mining operations Horn of Africa)
- Saab AB
- SBG Technology Solutions
- Science Applications International Corporation (SAIC)
- Sensis Corporation
- Shell Oil Company
- Siemens AG
- / SimplexGrinnell, LP
- SFA, Inc.
- SGIS
- Smartronix, Inc.
- SmartRounds
- Smith & Wesson
- Sobran, inc
- SPARTA, Inc.
- SpotterRF
- Springfield Armory
- SRC Inc
- SRI International
- ST Engineering
- Sumaria Systems
- Vision Technologies Systems
- Stanley, Inc.
- Standard Missile Company LLC
- Stevedoring Services of America
- Stewart and Stevenson
- Strum, Ruger & Company Incorporated
- Subsystem Technologies Incorporated
- Sverdrup Corporation
- Swiss Arms
- Talla-Tech
- Tangent Networks LLC
- Forjas Taurus S/A
- TCom
- Teledyne
- Telent
- Texas Instruments
- Textron Inc.
- Bell Helicopter Textron
- United Industrial Corporation
- AAI Corporation
- The Columbia Group
- Trijicon
- Tri-Star Engineering, Inc.
- TriWest Healthcare Alliance
- Tyco International Ltd.
- University of Texas System
- Unisys Corporation
- United Technologies
- URS Corporation
- Washington Group International
- USmax Corporation
- US Falcon
- US Ordnance
- Vangent
- Velocity Systems
- Verizon Communications
- Vinnell Corporation
- Westinghouse Electric Corporation
- Wiley X
- Worldcorp Inc.
- Wyvern Technologies, Aerospace & Defense Contractors
- Academi LLC (formerly Blackwater and Xe Services)
- York Executive Operations
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