| Business | Phone |
| Datarac Information Svc 14120 Newbrook Dr 200, Chantilly 20151 | (703) 817-9700 |
| Dyncorp Information Systems 1500 Conferene Center Dr, Chantilly 20151 | (703) 951-3333 |
| Dyncorp Information Systems 15000 Conference Ct Dr, Chantilly 20151 | (703) 433-1425 |
| Syracuse Research Corp 14520 Avion Pkwy 2, Chantilly 20151 | (703) 814-8300 |
| Tech Resources 4501 Daly Dr 180, Chantilly 20151 | (703) 689-9460 |