air alert; air attache; air attack; air bag; air base; air bladder; air bubble; air castle; air cell; air cleaner; air combat command; air compressor; air conditioner; air conditioning; air corps; air cover; air crew; air current; air cushion; air defense; air division; air duct; air embolism; air filter; air flow; air force; air force academy; air force intelligence surveillance and reconnaissance; air force isr; air force officer; air force research laboratory; air force space command; air gas; air group; air gun; air hammer; air hole; air horn; air hose; air hostess; air jacket; air lane; air letter; air lock; air mail; air marshal; air mass; air mattress; air medal; air mile; air national guard; air out; air passage; air plant; air pocket; air pollution; air potato; air power; air pressure; air pump; air raid; air reconnaissance; air rifle; air sac; air search radar; air shaft; air sick; air sickness; air sock; air space; air spring; air station; air terminal; air thermometer; air traffic; air transport; air transportation; air transportation system; air travel; air traveler; air traveller; air unit; air wave; air well; air-breathing; air-condition; air-conditioned; air-conditioner; air-cool; air-cooled; air-dried; air-drop; air-dry; air-filled; air-freight; air-intake; air-raid shelter; air-ship; air-slake; air-sleeve; air-tight; air-to-air; air-to-air missile; air-to-ground; air-to-ground missile; air-to-surface; air-to-surface missile;