| Business | Phone |
| Assurance Technology Group Llc 21552 Thames Ave, Lexington Park 20653 | (301) 737-1909 |
| Edo Corp 22738 Maple Rd # 208, Lexington Park 20653 | (301) 862-7990 |
| Honeywell Technology Solutions 46967 Bradley Blvd # D, Lexington Park 20653 | (301) 737-1000 |
| Man Tech Systems Engineering 46610 Expedition Dr # 101, Lexington Park 20653 | (301) 862-2200 |
| Mil Corp 22188 Three Notch Rd # F, Lexington Park 20653 | (301) 866-6367 |