(брит.) ескадрилья літаків-коректувальників
observation point / observation post (OP)
troop-carrier squadron / troop carrier squadron
air observation post observer
air observation post
air observation post flight
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
aiming post lamp / aiming post light
air cavalry squadron
USAF Air Demonstration Squadron (`Thunderbirds`)
special air mission squadron
air ammunition squadron