| Acronym | Meaning |
 | RCS | Reaction Control System (Subsystem) |
| PORB | Production Operations Review Board |
| MLI | Multilayer Insulation |
| MEP | Minimum Entry Point |
| LOS | Lift-Off Simulator |
| ORG | Organization |
| RTCP | Real-Time Communications Processor |
| COMAS | Combined Orbital Maneuvering And Abort System |
| RHM | Relative Humidity Monitor |
| SRCB | Software Requirements Control Board |
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