warning device

radiation warning device

visual warning device

safety and arming device / safety-and-arming device

air intake device / air-intake device

advance warning

advance-warning satellite

air defense early warning

airborne early warning (AEW)

airborne early warning aircraft

airborne early warning and control (AEW&C)

airborne warning and control aircraft

Airborne Warning and Control System (AWACS)

ballistic missile early warning system

distant early warning line

early warning (air defense)

early warning (EW)

early warning ground-based radar (EW GBR)

early warning radar station

early warning sharing (system) (EWS)

early warning system (EWS)

early warning system (EWS) operator

fire a warning shot

gas alarm / warning

missile attack warning

missile early-warning system

missile warning

Movement Warning Order (MWO)

NATO Airborne Early Warning and Control Force

NATO Intelligence Warning System (NIWS)

phased array warning system (PAWS)

public warning

radar warning