| Acronym | Meaning |
 | IMU | Inertial Measurement Unit |
| MSEC | Master Separation Events Controller |
| MIL | GSFC Spaceflight Tracking And Data Network Station |
| MAN | Microwave Aerospace Navigation |
| R&PM | Research And Program Management |
| GND | GrGNDGround |
| OPNS | Operational Phase |
| CM | Consumables Management |
| LOB | Line Of Balance |
| ISS | Installation Support Services |
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