нести бойове чергування
airborne alert
continuous airborne alert posture
Boeing E-4 Advanced Airborne Command Post (AACP) / E-4 National Airborne Operations Center (NAOC)
air alert
alert condition (LERTCON)
alert level
bug alert
combat alert duty
combat alert forces
crash air alert
deferred alert
distress alert; distress call
full alert (posture)
Global Disaster Alert and Coordination System (GDACS) (UN)
Global Outbreak Alert Response Network (GOARN, WHO)
hot alert
keep alert
normal alert
notification of alert
on the alert
practice alert
quick reaction alert
ready alert
Ship Security Alert System (SSAS)
silent alert
stand-by alert
state of alert
status of alert (state of readiness)
strategic alert
security alert team
Anti-Terrorism Alert Center
call alert receiver