| Business | Phone |
| Aviation Research 6728 S Meridian Ave, Oklahoma City 73159 | (405) 681-0090 |
| Washington Consulting Group 5505 N Brookline Ave # I109, Oklahoma City 73112 | (405) 949-2590 |
| Robinson Aviation 1601 Nw Expressway St, Oklahoma City 73118 | (405) 840-3771 |