| Business | Phone |
| Alarm & More 2501 S W S Young Dr, Killeen 76542 | (254) 526-3399 |
| U R Security 4505 Trimmier Rd, Killeen 76542 | (254) 200-1020 |
| U S Quantum Alarm 3901 E Stan Schlueter Loop, Killeen 76542 | (254) 699-1169 |
| Extreme Security Inc 1300 Dogwood Blvd, Killeen 76543 | (254) 526-7233 |