| Business | Phone |
| Alan E Gearing Pe 4500 S Four Mile Run Dr, Arlington 22204 | (703) 820-9457 |
| Anteon Corp 2231 Crystal Dr 600, Arlington 22202 | (703) 521-3818 |
| Applied Resources Inc 1700 N Moore St, Arlington 22209 | (703) 243-2700 |
| Washington Group Intl 2345 Crystal Dr 708, Arlington 22202 | (703) 236-2700 |
| Schafer Corp 3811 Fairfax Dr 300, Arlington 22203 | (703) 516-6000 |
| Mead & Hunt Inc 1655 Fort Myer Dr 700, Arlington 22209 | (703) 351-5251 |
| Building Engineering & Mntnc 2000 14th St N, Arlington 22201 | (703) 248-9686 |
| Combustioneer Corp 320 23rd St S, Arlington 22202 | (703) 418-3713 |
| Sentel Corp 1931 Jefferson Davis Hwy 3, Arlington 22202 | (703) 602-3739 |
| Systems Engineering Group Inc Arlington 22202 | (703) 553-2653 |
| Bae Systems 3811 Fairfax Dr 500, Arlington 22203 | (703) 524-6264 |