| Acronym | Meaning |
 | EFTO | Encrypted For Transmission Only |
| GORP | GrGORPGround Operations Requirements Plan |
| EOL | End Of Line |
| HVDS | Hypergolic Vapor Detection System |
| PNEU | Pneumatic |
| SCIM | Standard Cubic Inches Per Minute |
| WTSC | Wet Tantalum Slug Capacitor |
| HSCU | Hydraulic SUPPly And Checkout Unit |
| SCU | Signal Control Unit |
| MDD | Mate/demate Device |
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