Manufacturers
| Atlantic Research Corp | Alexandria, | Virginia, | USA |
| Douglas Aircraft Space Systems Center | Huntington Beach, | California, | USA |
| Martin Marietta Corporation | Bethesda, | Maryland, | USA |
| Michoud Assembly Facility (Chrysler Aerospace) | New Orleans, | Louisiana, | USA |
| North American Aviation Space & Information Systems Div | Downey, | California, | USA |
| Space Data Corp | Chandler, | Arizona, | USA |