| Acronym | Meaning |
 | SCIU | Spacecraft Interface Unit |
| R | Replace |
| SGMT | Simulated Greenwich Mean Time |
| LIMS | Logistics Inventory Management System |
| LSO | Landing Support Officer |
| NNI-I | NASA Standard Initiator-Type I (was SMSI) |
| GSSI | Ground Support System Integration |
| GCL | Ground Coolant Loop |
| RJOD | Reaction Jet OMS Driver |
| MTP | Mission Test Plan |
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