чергова пожежна машина
fire tender
destroyer tender
diving tender (YDT)
refueler; refueling tender
refueling tender
tender
wireless tender
seaplane tender
duty, off duty
duty, on duty
heavy duty follower spring
continuous heavy-duty service
heavy-duty
heavy-duty freight car
heavy-duty hoisting equipment
heavy-duty multiple disk steering clutch
heavy-duty pavement
heavy-duty transfer case
heavy-duty test
automatic heavy barrel rifle / heavy barrel automatic rifle
heavy-armored (heavy armoured)
heavy-weight torpedo / heavy weight torpedo (HWT)
slant fire; diagonal fire; oblique fire; fire to the oblique
fire control orders (FCO) ('Hold Fire', 'Cease Fire' and 'Engage')
selector lever, fire selector, fire switch, fire selector switch
active service/ duty
airlift duty officer
combat alert duty
combat duty assignment
command billet / duty / installation
command duty
demolition duty