I was a USAF FAC
assigned to the 21st TASS from Nov 1966 - Nov 1967. I spent the year
supporting the 1st Bde of the 101st AB throughout II Corps and southern I Corps.
Our call sign in II Corps was BORON. In I Corps we were assigned to
Americal and our call sign was HELIX. I flew the O-1E. Unless I
missed it, you do not list BORON as a callsign. Also, HELIX is listed only
for the O-2, you should add the O-1.
Thanks, Jan Stevens, Lt Col USAF, Ret.