| Acronym | Meaning |
| CMD | DCDR Command Decoder |
| EOP | Experiments Of Opportunity |
| INTRG | Interrogate |
| MTEO | Optical Maintenance Test Equipment |
| DFS | Dynamic Flight Simulator |
| MDCS | Material Data Collection System |
| PGSE | Payload Ground Support Equipment |
| MTBR | Mean Time Between Replacement |
| CEIAC | Coastal Engineering Information Analysis Center |
| GCTS | Ground Communication(s) Tracking System |