Various USAF Base Operations Thailand & RVN:
Staff Sergeant ‘ADAMS’ RVN:
This, I think, was maybe the norm during the hot months during the Vietnam War, and with no unit patches, he could be on any of the air bases, likely even Thailand, Guam, USA, Etc. What section of ground crew/maintenance, or ordnance group, Armorer, Radar or communications expert, Traffic Control, Fueler, even supply, truck drivers, or logistics, administration, judicial, so your imagination is a good as mine here.
USAF RVN era First Sgt:
320 TAC. F/G, Crew Dog:
(The cap here just represents the outfit, a souvenir type of thing, maybe a party hat or something like that, but not his working cap.)
USAF Base Security Police:
Note: There is always a bit of gosh and by-golly with my uniform collection, and who or what unit they represent, I do my best with what I have, which is limited. I try to get them close, so many look just the same, and could be a million different places and times.
