warning indication

ground moving target indication format (GMTIF)

moving-target indication radar

RADIAC ('radioactivity, detection, indication and computation')

indication of target

caution indication

target indication from an auxiliary target

error in indication

indication

visual indication

visual target indication

target indication

target indication signal

received signal strength indication (RSSI)

moving-target indication radar (MTI)

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