| Business | Phone |
| Am-Pro Protective Agency Inc 5350 Shawnee Rd, Alexandria 22312 | (703) 658-4323 |
| Boughton Protective Svc Po Box 22469, Alexandria 22304 | (703) 862-9447 |
| Ces Security Inc Alexandria 22314 | (703) 549-3775 |
| Combat Security Force Inc 2001 Mount Vernon Ave, Alexandria 22301 | (703) 518-4477 |
| Covenant Aviation Security 1630 Duke St, Alexandria 22314 | (703) 299-8281 |
| D & D Security 1420 Prince St, Alexandria 22314 | (703) 836-2600 |
| Deco Security Svc 5600 General Washington B211, Alexandria 22312 | (703) 642-9284 |
| F-Secure Inc 211 N Union St 100, Alexandria 22314 | (703) 519-1201 |
| National Protective Svc 205 S Whiting St, Alexandria 22304 | (703) 379-7272 |
| Magum Executive Security Inc 108 N Washington St, Alexandria 22314 | (703) 836-6373 |
| Metropolitan Security Svc 2256 N Beauregard St, Alexandria 22311 | (703) 256-7461 |
| Inter Con Inc 5515 Cherokee Ave, Alexandria 22312 | (703) 941-5001 |
| Alexandria Security Patrol 2904 Daisy St, Alexandria 22306 | (703) 765-0407 |
| Ares Group Inc 8625 Richmond Hwy, Alexandria 22309 | (703) 704-5351 |
| Falcon Information Security 8627 Engleside Office Park # B, Alexandria 22309 | (703) 799-2600 |