| Answer | Crossword Clue |
|---|---|
| EPA | Air-testing gp. |
| NIMH | Gp. that funds psychiatric drug testing |
| EPA | Air-testing org. |
| EPALAB | Govt. testing site for air and water quality |
| EPA | Air quality gp. |
| EPA | Clean air gp. |
| TAC | Air Force gp. |
| RAAF | Aussie's air gp. |
| EPA | Air watchers' gp. |
| FAA | Air safety gp. |
| EPA | Clean-air gp. |
| TSA | Air travel protection gp. |
| IATA | Worldwide air transport gp. |
| FAA | Air traffic control gp. |
| FAA | Air-safety rating gp. |
| EPA | Clean Air Act administrative gp. |
| EPA | Gp. interested in clearing the air |
