- Adroit Systems (ASI)
 - Engineering products and services primarily to national security and defence programmes of the U.S. Government. - ATN Systems, Inc
- Arlington - A consortium of member airlines, with the Federal Aviation Association, which are developing Aeronautical Telecommunication Network (ATN) products.
- Avionics Communications Inc.
- Leesburg - Books, software, seminars, market reports, databases, and videos for the avionics professional.
- Dealy Strategy Group, The
- Strategic advisory services, market research, contract negotiations, valuations and deal support for the launch vehicle, satellite manufacturing and service industries.
- Genesis Engineering Company, LLC
- Lanham - Technology development, engineering services, and manufacturing of aerospace hardware for space applications, and Ground Support Equipment (GSE) to support flight hardware development.
- International Space Business Council (ISBC)
- Bethesda - Providing resources, conferences, news, and support of the global space industry.
- MAC Aerospace Corporation
- Chantilly - International supplier of spare parts for U.S. manufactured military aircaft and weapon systems.
- Orbital Sciences Corporation
- Dulles - Space technology and services company that develops and manufactures low and medium-level earth orbit satellites.
- Praxis
- Alexandria - Space and ground hardware and software products for government and commercial customers.
- Rannoch Corporation
- Specialises in analysis and development of technologies for aircraft communication, navigation, and surveillance.
- Sentel
- Alexandria - Provides engineering services and support for government agencies and commercial businesses.
- Spacehab
- Vienna - Commercially develops, owns, and operates habitable modules that provide space-based laboratory research facilities and logistics resupply services aboard the U.S. Space Shuttle system.
- Swales Aerospace
- Provides flight hardware and flight load analysis for unmanned and manned space flight.
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