| Business | Phone |
| Rollinger Engineering Inc San Antonio 78230 | (210) 558-5000 |
| Firetrol Protection Syst Inc 3453 N Panam Expy, San Antonio 78219 | (210) 270-8400 |
| Jarret Volunteer Fire Dept 18015 Benton City Rd, San Antonio 78252 | (210) 622-3900 |
| Northstar Fire Protection-Tx 10140 Huebner Rd, San Antonio 78240 | (210) 697-0238 |
| Ritchie Fire Protection 5807 La Colonia, San Antonio 78218 | (210) 666-3744 |
| Koetter Fire Protctn - Sn Antn 903 E Nakoma St, San Antonio 78216 | (210) 499-5707 |