drop onto one knee

опуститися на коліно (‘He dropped onto one knee, his assault rifle covering the arc of fire to the front of us.’ - ‘Operation Mayhem’, Heaney with Lewis, 2014)

drop to one knee

all for one and one for all / one for all and all for one

get down on one knee

smeare thick lines of camouflage cream onto ....

project power onto the land

force onto the defensive

dead drop / dead-drop exchange

drop head body (drop-head body)

knee brace

knee pads

knee action

knee-action wheel

take a knee

one-way UAV / one-way attack UAV (OWA UAV)

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