| Acronym | Meaning |
| HOS | Hydrocarbon Oxidation Studies |
| STA | System Technology Associates |
| WBSI | Western Behavioral Sciences Institute |
| TRACS | Trends In Atmospheric Constituents Study |
| DOT | Department Of Transportation |
| SPEC | Strategic Planning And Evaluation Committee |
| SPTVAR | Special Purpose Test Vehicle For Atmospheric Research |
| ARSR | Air Route Surveillance Radar |
| AWDS | Automated Weather Distribution System |
| EXPRS | EXpendable Probe Receiver System |