| Acronym | Meaning |
 | SOC | Simulation Operations Center |
| MSO | Model For Spare(s) OPtimization |
| IAL | Immediate Action Letter |
| TPM | 1Terminal Phase Midcourse #1 |
| E/M | Engineering Model |
| FLT | Floating |
| SSO | Safety Signification Operation |
| PMP | Pump |
| UMO | Unmanned Orbital |
| CD | Center Director (KSC Directorate) |
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