I was stationed out of Danang, RVN and never knew a moment when either an F4 or Huey were in the air. It didn't dawn on me until I got home and after a few days of feeling like something was missing in my life heard an incoming Huey working for LifeFlight go nearby to the local hospital...It was much more Huey's than F4's but still a constant racket which probably allowed us to sleep at night. We had a Marine Corp's helicopter base directly across the road from our main base of operations which used to be a large Naval hospital. Our main gripe with their operations was that whenever Charlie decided to mortar or rocket the Marines we caught their short rounds. At the time I was there the USS Sanctuary was anchored out in the harbor, it took the place of the out of date Naval Hospital we now occupied. It was kept busy with life flights, Navy security was in the same building when I worked at Harbormaster, most of the time they were quiet, one day there was a bustle of activity and guys were running out the doors to our observation deck. I went out to see what the fuss was and there was a flight of medivac choppers dropping off wounded and one bird was coming in smoking, the pilot got right up to the Sanctuary, clearly in distress from all the smoke. We could see wounded guys being dropped followed by guys in helmets, then the pilot swung the bird out and away from the ship so he could ditch in the water when Boom, she went up in the fireball. Most heroic thing I ever saw.