unit air defense

air defense fire unit

Air Force Air Defense Command

Japan Air Self-Defense Force (JASDF) / Japanese Air Force

perimeter defense (all-around defense)

beach defense mine / beach-defense mine

self-defense unit

battery coolant unit / battery-coolant unit (BCU)

gear reduction unit / gear-reduction unit

position and navigation unit / position navigation unit (PNU)

pinch (a unit) out of a large unit

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

air defense (AD)

Air defense and Airspace Management Directorate (NATO)

air defense area

air defense artillery (ADA)

air defense artillery battalion

air defense artillery system

air defense brigade

air defense command

air defense commander (ADC)

air defense control center

air defense early warning

air defense emergency

air defense forces

air defense ground environment

air defense guided missile system (AD GM sys)

air defense materiel

air defense missile

air defense missile regiment

air defense operation