| Business | Phone |
| Cognisa Security 0 National Airport, Washington 20001 | (703) 419-1086 |
| Assc Inc 5111 Georgia Ave Nw, Washington 20011 | (202) 723-7040 |
| Atlas International Security 2120 L St Nw, Washington 20037 | (202) 296-1011 |
| B & B Security Consultants Inc 1219 Good Hope Rd Se, Washington 20020 | (202) 678-9490 |
| Bodyguard Security Defense 2925 Nelson Pl Se # 2, Washington 20019 | (202) 575-3833 |
| Capital Services 1201 U St Nw # 300, Washington 20009 | (202) 462-5600 |
| Colorado Security Agency Inc 4131 3rd St Nw, Washington 20011 | (202) 829-9233 |
| Columbia Canine Security Svc 4811 Georgia Ave Nw, Washington 20011 | (202) 829-6445 |
| Command Security Corp 2300 M St Nw, Washington 20037 | (202) 973-6464 |
| Commando K9 Detectives Inc 1914 Benning Rd Ne, Washington 20002 | (202) 396-3800 |
| District Investigation/Scrty 7408 Georgia Ave Nw, Washington 20012 | (202) 882-1093 |
| Discount Security Enforcement 137 Kennedy St, Washington 20011 | (202) 575-0062 |
| Ft Chaplin Pk Apts 27 42nd St Ne, Washington 20019 | (202) 396-4825 |
| Horizon House Apartments 1150 12th St Nw, Washington 20005 | (202) 682-9398 |
| Ics Protective Svc 523 H St Ne, Washington 20002 | (202) 543-6080 |
| Intelli 7 Inc 1054 31st St Nw # 290, Washington 20007 | (202) 339-9696 |
| Ipc Intl Corp 40 Massachusetts Ave Ne, Washington 20002 | (202) 289-9884 |
| Jenkins Security Consultants 2001 Bunker Hill Rd Ne, Washington 20018 | (202) 832-9653 |
| Light House Security Corp 3760 Minnesota Ave Ne # 1, Washington 20019 | (202) 398-2112 |
| Metro One Loss Prevention Svc 3000 Connecticut Ave Nw, Washington 20008 | (202) 299-1286 |
| Metropolitan Protective Svc 3500 14th St Nw, Washington 20010 | (202) 299-9872 |
| Metropolitan Tactical Svc Inc 7603 Georgia Ave Nw # 1, Washington 20012 | (202) 722-7250 |
| Night Watch Intl Surveillance 5335 Wisconsin Ave Nw # 950, Washington 20015 | (202) 234-1099 |
| P M Reality 2300 M St Nw, Washington 20037 | (202) 467-6768 |
| Pentacle Group Security Office 444 16th St Ne, Washington 20002 | (202) 396-2321 |
| Prince Security Svc Inc 6400 Georgia Ave Nw, Washington 20012 | (202) 726-7110 |
| Rabco Enterprises 3401 Georgia Ave Nw, Washington 20010 | (202) 722-0993 |
| Securitas Security Svc Usa Inc 1730 M St Nw, Washington 20036 | (202) 223-2753 |
| Security Assurance Management 910 17th St Nw # 220, Washington 20006 | (202) 293-8011 |
| Security Network 1373 Sheridan St Nw, Washington 20011 | (202) 291-9454 |
| Sentry Security Intl Inc 7705 Georgia Ave Nw # 212, Washington 20012 | (202) 291-8030 |
| Securiguard Inc Dulles International Airport, Washington 20041 | (703) 572-2796 |
| T W Security 5111 Georgia Ave Nw, Washington 20011 | (202) 722-1004 |
| Watkins Security Agency 2907 Martin L King Jr Ave Se, Washington 20032 | (202) 563-0790 |
| Watkins Security Agency 400 N Capitol St Nw, Washington 20001 | (202) 393-4771 |
| Watkins Security Agency 5325 E Capitol St Se, Washington 20019 | (202) 581-2871 |
| Van Guard Security 605 G St Nw, Washington 20001 | (202) 638-7475 |
| Wackenhut Services Inc 3801 Nebraska Ave Nw, Washington 20016 | (202) 244-2105 |
| 815 Connecticut Avenue 815 Connecticut Ave Nw, Washington 20006 | (202) 342-1598 |
| Unlimited Security 611 L St Nw, Washington 20001 | (202) 371-1561 |