| Business | Phone |
| Rimkus Consulting Group Inc 4601 Dtc Blvd, Denver 80237 | (720) 488-8710 |
| Firearms Technologies Inc Po Box 2722, Denver 80201 | (303) 237-5115 |
| Forensic Automotive Po Box 22333, Denver 80222 | (303) 758-3555 |
| Western Engineering & Research 2175 S Jasmine St # 1000, Denver 80222 | (303) 757-4000 |