Chuck,
My father was the B-33 S-1 then RF/PF advisor to Maj. Phong from 09/01/66 to 01/02/67; looks like he left before your father got there.
Your father was XO:
Askine James W CPT 09/03/67 02/04/68 DET XO
SOURCE
Their base was Camp Widder, An Loc/Hon Quan. An Loc was about 75 miles north west of Saigon, and about 15km from the Cambodian border.
--ghp