- Tri-Tek Security Systems
- Tyght Security
- Tyght Security
- Tyght Security
- Tym Inc
- Ultimate Security Svc
- United Safety Alarms
- Vance Security Systems
- Vance Security Systems
- Vanco Protection Svc
- Varateck
- VCS Security Systems
- Venture Systems
- Venture Systems
- Vi-Dat Technologies
- Vi-Dat Technologies
- Vi-Dat Technologies
- Video Alarm Security
- Video Alarm Security
- Video Digital Security
- Vidtex Systems Inc
- Vision Security Svc
- Volunteer Security Inc
- VST Inc
- Wagner Security & Electronics
- Wagner Security & Electronics
- Waimea Group Inc
- Waimea Group Inc
- West Virginia Security Inc
- Wire Tex Special Systems
- Woodlands Security Co
