повітряний спостерігач
sentry go / sentry-go
gate sentry
group sentry post
pick off a sentry
sentinel / sentry
border and offshore submersible sentry
zone of sentry guard
electronic sentry
carry off a sentry
jump a sentry
sentry
sentry box
sentry detachment
sentry dog
sentry dog detachment
sentry dog training course
sentry duty
sentry go
sentry group
sentry guard
sentry line
sentry outpost
sentry over arms
sentry path
sentry post
sentry reserve
sentry squad
sentry unit
pick а sentry
Baltic Sentry
aerial refueling / air refueling / in-flight refueling (IFR) / air-to-air refueling (AAR)
air combat capable helicopter / air-to-air capable helicopter