- ACG Intercontl
- Aepco
- AERA Inc
- Analysis & Technology Inc
- AOT Inc
- Applied Management Corp
- Ares Government Svc
- BAE Systems
- Battelle
- Bectech Inc
- CACI Inc
- Corrosion Engineering Svc Inc
- Digital System Resource
- Digital System Resources
- E G & G Emissions Testing Svc
- ELS Inc
- EMCOR Facilities Svc Inc
- Falcon Consulting Inc
- Life Cycle Engineering Inc
- Mc Laughlin Research Corp
- Paladin Intergration Engr
- Paradigm Technologies
- Project Design Systems Inc
- Summit Technologies Inc
- Support Systems Assoc Inc
- SYS Technologies Inc
- Techmatics Inc
- Vanguard Research Inc
- W E Meyer Corp
