Department of Defense

• Air Force
• Army
• Navy
• Defense Special Weapons Agency
• Defense Nuclear Agency
• Defense Threat Reduction Agency
• Missile Defense Agency
• Office of Naval Research
• Joint Non-Lethal Weapons Directorate

Engineering Design & Test

• Weidlinger & Associates
• Wyle Labs

Environmental Companies

• Bolt Beranek & Newman
• Dames & Moore
• Tetra Tech

Federal Aviation Administration

Major Aerospace Companies

• Aerojet
• Aerospace Corporation
• ATK
• CSC
• Gencorp Aerojet
• General Physics
• Howden
• Hughes Missile Systems
• ITT Industries
• Lockheed Martin
• Mantech International
• NCI Information Systems
• PRC Systems Services
• SAIC

National Aeronautics & Space Administration

National Laboratories

• Air Force Research Laboratory
• Army Research Laboratory
• Idaho National Laboratory
• Los Alamos National Laboratory
• Sandia National Laboratory

Petrochemical

• British Petroleum
• Conoco Philips
• Exxon Mobile
• Equillon
• Paramount Petroleum
• Shell Refining Company
• Tesoro Refining Company
• Tosco
• Ultramar
• Unocal
• Valero

Space Agencies (International)

• Australian Department of Defense
• Australian Space Licensing & Safety Office
• European Space Agency
• Korean Aerospace Research Institute
• South African Spaceport
• Spaceport Canada

Space Launch Organizations

• Beal Aerospace
• Kistler Aerospace
• Space Exploration Technologies Corp

Other

• Alaska Aerospace Development Corp
• General Motors
• Architect Engineers
• Airport Operations Companies
• General Physics
• IAASS
• Research Triangle Institute