| Acronym | Meaning |
 | DOD | Department Of Defense |
| PSP | Payload Signal Processor |
| PCU | Pressure Control Unit |
| EVM | Earth Viewing Module |
| G | Units Of Gravitational Force |
| ISIL | Interim Support Items List |
| SMS | Shuttle Mission Simulator |
| R | Roll |
| RTCC | Real-Time Computer Center (NASA) |
| PM | PMAPPerformance Monitor Annunciation Panel |
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