| Acronym | Meaning |
 | GFP | Government Furnished Property |
| HO | Hydrogen-OxYgen |
| GPBIM | General Purpose Buffer Interface Module |
| RMRS | Repeatable Maintenance And Recall System |
| BUFF | Buffer |
| PFS | Primary Flight System |
| CCM | E Contract Change Mass Estimate |
| FOD | Flight Operations Directorate (JSC) |
| PRS | Primary Rescue Site |
| IBM | International Business Machines |
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