| Acronym | Meaning |
 | FWD | HT SHLDForward Heat Shield |
| ASCII | American Standard Code For Information Interchange |
| CDB | Central Data Buffer |
| ERG | Ergometer |
| SSS | Station Set Specification |
| PDR | Preliminary Data Requirements |
| NRI | NonreCurring Investment |
| PTC | RPad Terminal Connection Room |
| DIDS | Defense Integrated Data System |
| SRR | System Requirements Review |
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