| Business | Phone |
| Boeing Co 8120 Mid America Blvd # 300, Oklahoma City 73135 | (405) 736-6898 |
| Dow Aerospace 6703 Camille St, Oklahoma City 73149 | (405) 670-6800 |
| Engineering Management Concept 4600 Se 29th St # 520, Oklahoma City 73115 | (405) 677-8500 |
| Lockheed Aeromod Center Inc 3000 Tower Dr, Oklahoma City 73115 | (405) 670-1060 |