| Business | Phone |
| Avenge Inc 18635 Jarkey Dr, Hagerstown 21742 | (301) 665-9020 |
| Aviation Resources De Inc 18635 Jarkey Dr, Hagerstown 21742 | (301) 665-1294 |
| Caci Technologies 18635 Jarkey Dr, Hagerstown 21742 | (240) 420-3825 |
| Jet Aviation Inc 18625 Jarkey Dr, Hagerstown 21742 | (301) 665-9470 |