| Acronym | Meaning |
 | ALEXIS | Array Of Low-energy X-ray Imaging Sensors |
| KP | Geomagnetic Planetary Index |
| VM/CMS | Virtual Machine/Conversational Monitor System |
| GARP | Global Atmospheric Research Program |
| GBYTE | Gigabyte (109) |
| SCS | Soil Conservation Service |
| NAO | North Atlantic Ocean |
| LOS | Loss Of Signal |
| NOPS | Nimbus Observations Processing System |
| AFSSO | Air Force Special Security Office |
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