| Business | Phone |
| Anteon Corp 44427 Airport Rd, California 20619 | (301) 863-1290 |
| Sierra Management Technologies 44427 Airport Rd, California 20619 | (301) 737-3000 |
| Site 44427 Airport Rd # 110, California 20619 | (301) 862-5166 |
| Sonalysts Inc 300 Airport Dr, California 20619 | (301) 863-4759 |
| Spectrum Sciences Inc 44425 Airport Rd # 100, California 20619 | (301) 862-1993 |
| Strategic Systems Technology 23024 Gunston Dr, California 20619 | (301) 863-4825 |
| Stv Inc 44427 Airport Rd # 120, California 20619 | (301) 862-2344 |
| Sverdrup Technology Inc 44427 Airport Rd # 110, California 20619 | (301) 863-7755 |
| D 3 Technologies 22685 Three Notch Rd # D16, California 20619 | (301) 862-2706 |
| Dynamics Research Corp 23330 Cottonwood Pkwy, California 20619 | (301) 737-7699 |
| Triton Services Inc 45370 Alton Ln, California 20619 | (301) 737-2300 |
| General Scientific Corp 22685 Three Notch Rd, California 20619 | (301) 862-0090 |