| Acronym | Meaning |
 | S&AD | Science And Applications Directorate |
| EMS | Engineering Master Schedule |
| HSU | Helium Service Unit |
| ESTA | Escape System Test Article |
| MAG | Magazine |
| DIF | Difference |
| CCC | Communication(s) Control Console |
| RIT | Request For Interface Tool |
| GCF | Ground Communications Facility |
| ILS/LAR | Review |
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