| Acronym | Meaning |
 | FOS | Flight Operations Support |
| KGAL/MIN | Kilogallons Per Minute |
| ISS | Instruction Summary Sheet |
| HSS | High Speed Reader |
| ACRV | Assured Crew Return Vehicle |
| MFA | Manned Flight Awareness |
| O&FS | Operations And Flight Support |
| OTR | Outer |
| HPOT | High-pressure Oxidizer Turbopump |
| MMS | Multimission Modular Spacecraft |
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