drop fire (on)

dead drop / dead-drop exchange

drop head body (drop-head body)

slant fire; diagonal fire; oblique fire; fire to the oblique

DROP (fire adjustment)

drop fire mortar

fire control orders (FCO) ('Hold Fire', 'Cease Fire' and 'Engage')

selector lever, fire selector, fire switch, fire selector switch

air drop

drop bolt

drop tank

drop zone (DZ)

drop-off point (DOP)

free fall air drop

gravity drop

heavy drop resupply

high-velocity drop

low-velocity drop

minimum pressure drop

voltage drop

magazine drop pouch / dump pouch

extinguishing agent drop

extinguishing agent drop abort

Operation Acid Drop

cartridge drop lever spring

drop center rim

drop container

drop rounds on the line

drop velocity

drop-in auto sear

velocity drop

free drop catch

landing gear drop test