check-out operation

spot check (spot- check)

firearm check in/out

check(-out) flight

check-out flight

check-out tests

check out

wait out / wait-out

clearing and isolating operation to root out enemy fighters

clandestine operation; covert operation

humanitarian operation; humanitarian relief operation (HUMRO)

PZ operation (pick-up zone operation)

noncombatant evacuation operation (NEO); non-combat evacuation operation

check sweeping

function check

maintenance check

radio check

routine check

security check

vehicle check-point

fleet operational readiness accuracy check sites (FORACS)

loalty check

NATO Naval Forces Sensors and Weapons Accuracy Check Sites

pre-combat check (PCC)

pre-execution check (inspection)

cross-check procedure (CCP)

rammer check lever

background check

ball check valve

brake vacuum check valve

check adjusting range

check fire

check for eavesdropping devices