| Acronym | Meaning |
 | ESW | Engine Status Word |
| ITL | Integrate |
| ESA | Engineering SuPPort Assembly |
| MMES | MSFC Mated Element Systems |
| F/C | Fuel Cells |
| MSL | Mechanical System(s) Laboratory |
| EMU-TV | Extravehicular MobilitY Unit - Television |
| EPS | Electrical Power System (Subsystem) |
| JST | Joint Systems Test |
| E | LSCEarth Landing Sequence Controller |
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