| Acronym | Meaning |
 | G-G | Ground-to-Ground |
| EETB | Electronic Electrical Termination Building |
| LERC | Lewis Research Center (Cleveland |
| HISAM | Hardware Initiated Standalone Memory |
| DECU | Data Exchange Control Unit |
| TEMS | Transport Environment Monitoring System |
| OOS | Orbit-to-Orbit Stage |
| VVI | Vertical Velocity Indicator |
| M | Mega |
| TIC | Total Item Change |
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