| Acronym | Meaning |
| DTC | Distance Traveled Count |
| ELCHEM | Electrified Clouds As Sources Of NOx |
| PCO | Polar Cap Observatory |
| MPD | Magnetospheric Particles Detectors |
| DRAAG | Design Review And Acceptance Group |
| IARP | International Atmospheric Research Program |
| AWRDF | Advanced Weapons Radiochemical Diagnostics Facility |
| GSTS | Ground Surveillance And Tracking System |
| ECA | Earth-crossing Asteroids |
| BAE | British Aerospace |