| Acronym | Meaning |
| PETA | Performance Evaluation And Trend Analysis |
| PTV | Pathfinder Test Vehicle |
| GLAADS | Gun Low Altitude Air Defense System |
| CT | Crawler Transporter |
| CSD | Control System DeveloPment |
| MCBF | Mean Cycle Between Failures |
| PSS | Propulsion Support System |
| ATMOS | Atmospheric Trace Molecule Spectroscopy |
| SPDCI | Standard Payload Display And Control Interface |
| ESSA | Environmental Sciences Services Administration |