zero in on

zero-zero landing

zero-zero weather

battlesight zero (BZO)

ground zero (GZ)

vision nil (zero)

zero elevation

zero shot

zero tolerance

zero visibility

zero zone

zero-in

zero dark thirty

zero lead homing

actual zero of sight

zero degree angle

zero in

zero in on intelligence assets

zero mark

zero recoil

under zero angle of incidence

Far-Zero

have zero intelligence-related experience

zero mark of gas regulator

zero indicator

inferred zero

inferred-zero instrument

absolute zero

zero ceiling

zero degree elevation

zero gravity

axis of zero lift

point of zero velocity