| Acronym | Meaning |
| PFC | Performance Flight Certification |
| DOD | Department Of Defense |
| CE | Cost Element |
| EPDS | Electrical Power And Distribution Subsystem |
| CAP | CCMS Application Programs |
| OPI | Orbiter Payload Interrogator |
| SIS | Shuttle Information System |
| VERIF | Verification |
| GES | Goddard Experiment SuPport System |
| SCAT | Space CommunicationandTracking |