загін літаків артилерійської розвідувальної авіації
observation point / observation post (OP)
air observation post observer
air observation post
air observation post squadron
command-and-observation post
artillery observation post
control observation post
amount of command of observation post
antiaircraft observation post
battery observation post
cross-observation post
flash-spotting observation post
fort-observation post
forward observation post
forward observation post observer
groupment observation post
armored observation post
artillery group observation post
artillery groupment observation post
artillery observation post vehicle
forward artillery observation post
mobile artillery observation post
sound ranging observation post
vehicle-mounted artillery observation post
command p.-observation post
scientific observation post
aerial refueling / air refueling / in-flight refueling (IFR) / air-to-air refueling (AAR)
aiming post lamp / aiming post light
observation flight
flight restriction zone / flight restricted zone (FRZ)
upper air observation
air observation