| Acronym | Meaning |
 | S&R | Search And Rescue |
| ESSA | Environmental Science Services Administration |
| SBUV | Solar Backscatter Ultrav Iolet |
| SLR | Satellite Laser Ranging |
| NEXUS | Navaid-based Upper- Air Sounding System |
| HAO | High Altitude Observatory |
| ASAS | Advanced Solid-State Array Sensor |
| MCBE | McIDAS Broadcast Evaluation |
| AOO | Anticipated Operational Occurrence |
| PISP | Polar Ice Sheet Program |
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