Wow. Looking through that message traffic, I was struck by the fact that he had over 4,300 total flight hours. A little over 180 hrs in the CH-53A overall, and a little over 140 hrs in the last 90 days.
Also, the weather...300 ft ceiling and 1 mile visibility with heavy rain. And they absorbed 30 rounds of small arms fire.
Thanks for posting, and god bless your pops!