Frankie was the Team Sergeant on B/3/5's SCUBA Team circa 1982. Last the rumor mill had him going up to the 10th(?) and then retiring somewhere in the north/east. Got the Op Center Bunker story from him first hand.
Edit to add link for the young pups
http://www.army.mil/cmh-pg/books/Vietnam/7-ff/Ch6.htm