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military acronym for High Altitude, High Opening
soldiers do this to carefully plan their approach by parachute. they are dropped from the plane at a high altitude, i.e., 30,000 or 40,000ft. and open the parachute right after they exit the plane
they can fall for as long as 2 or more hours this way
the soldiers infiltrated the base while avoiding radar by going in with HAHO
by frodo February 28, 2005
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