air trunk drain tubes

cluster of tubes

quadruple tubes

field trunk pipelines

trunk carrier

wire trunk

air drain

storm drain

drain bole

drain connection

drain sample

engine thermostat housing drain valve

filling and drain plug

injector drain pipe

overboard drain port

sump drain

drain tube

drain

drain valve

bilge drain

aerial refueling / air refueling / in-flight refueling (IFR) / air-to-air refueling (AAR)

air combat capable helicopter / air-to-air capable helicopter

air support field pack, field pack air support, airborne / para (air support) / Pathfinder Bergen

advanced medium range air-to-air missile (AMRAAM)

air force air request net

Air Force tactical air direction net

air interdiction (AI), deep air support (DAS)

Air Mobility Command’s air assets

air operations syn. air warfare

air-to-air combat

air-to-air guided missile (AAM)

air-to-air missile

air-to-air refuelling (AAR)