| Acronym | Meaning |
 | DSCS | Defense Satellite Communications System |
| CSTC | Consolidated Satellite Test Center |
| APT | Automatic Picture Transmission |
| MFPE | Misson From Planet Earth |
| EAFB | Edwards Air Force Base |
| SLAR | Side-Looking Airborne Radar |
| MMCC | Mission Management And Control Centre |
| ENAP | Energetic Neutral Atom Precipitation |
| HOTOL | HOrizontal TakeOff And Landing |
| FEM | Flight-Engineering Model |
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