Answer: zerohour

AnswerCrossword Clue
ZEROHOUR

Time of action

ZEROHOUR

Moment of attack

ZEROHOUR

Operation's start

ZEROHOUR
When an attack is scheduled to start
ZEROHOUR
Moment of crisis.
ZEROHOURThe moment of crisis.
ZEROHOURAlmost the last minute.
ZEROHOURTime of crisis.
ZEROHOURTime for action.
ZEROHOURTime to attack
ZEROHOURMoment of truth
ZEROHOURBlastoff time
ZEROHOURDecision time
ZEROHOURShowtime, at NASA
ZEROHOURMilitary operation's start