chicken out

chicken feed

wait out / wait-out

all-out support

all-out war

blackout / black out

break out

burst out

call-out procedure

call-out suit (CBRN)

camp out

clear out

do not answer - out

end of message over/out

fill out units

go out of action

hull out

keep-out altitude

look-out (naut.)

look-out black spots

off-gauge cargo; out-/ oversized cargo

open out

out

out of action

out of ground effect (OGE)

out of range

out to you

out-of-sight flight

pull troops out of the line

pullout (pull-out)

put out a guard

put out an outpost

reaching out to the serviceman’s identity (PTSD)