| Business | Phone |
| American Background Security 127 Mercedes Ct, Winchester 22603 | (540) 665-0867 |
| Executive Protection Systems 172 Costello Dr, Winchester 22602 | (540) 662-4392 |
| Omni Alarm Systems Inc 131 S Loudoun St, Winchester 22601 | (540) 662-2000 |
| Young Brothers Security 16 W Boscawen St, Winchester 22601 | (540) 450-0146 |
| Titan Security 139 N Loudoun St, Winchester 22601 | (540) 662-0006 |