| Business | Phone |
| Aerotek 7312 Parkway Dr, Hanover 21076 | (410) 579-3000 |
| Computer Sciences Corp 7504 Connelley Dr # D, Hanover 21076 | (410) 766-5444 |
| Engineering Consulting Svc Ltd 1340 Charwood Rd # P, Hanover 21076 | (410) 859-4300 |
| Ght 7272 Park Circle Dr # 265, Hanover 21076 | (410) 712-7050 |
| Logicon 7320 Parkway Dr # J, Hanover 21076 | (301) 483-6000 |
| Parsons Transportation Group 1334 Ashton Rd, Hanover 21076 | (410) 694-0694 |
| Science Applications Intl Corp 1334 Ashton Rd, Hanover 21076 | (410) 850-5000 |
| Specialized Engineering 7504 Connelley Dr # G, Hanover 21076 | (410) 768-4800 |