| Business | Phone |
| Alpha Omega Investigations Inc 405 Upper Rd, Pittsburgh 15228 | (412) 221-9040 |
| Bergin Investigations Pittsburgh 15234 | (412) 563-1801 |
| Eci 10 Duff Rd # 205, Pittsburgh 15235 | (412) 247-7464 |
| Equity Protection Svc Inc 2227 Denlin St, Pittsburgh 15216 | (412) 343-1525 |
| Sitlaw Enterprises 429 4th Ave, Pittsburgh 15219 | (412) 642-7995 |
| R & D Security & Investigative 1700 E Carson St # 4, Pittsburgh 15203 | (412) 481-4407 |