| Business | Phone |
| Analytical & Research Tech 8408 Arlington Blvd, Fairfax 22031 | (703) 573-5001 |
| Center For Remote Sensing 3702 Pender Dr 170, Fairfax 22030 | (703) 385-7717 |
| European Research Svc 11350 Random Hills Rd, Fairfax 22030 | (703) 934-6155 |
| Ramos Research Group 10560 Main St, Fairfax 22030 | (703) 385-4148 |