My boss is a tad older than I, and a Vietnam vet. When he became my boss about 14 years ago, and when I asked him, he told me he was a supply procurement NCO in the Air Force before he retired. I thought, "yep, an Air Farce bean counter."
A few years ago, he opened up a little more, and told me he'd initially been in Air Police over in 'Nam.
This year I participated in bringing "The Moving Wall" to our town. It was THEN that I learned he'd earned a SILVER STAR in one of many nasty firefights he was in . . . riding the back of an Air Force jeep firing an M-60 near "Monkey Mountain" I believe he called it. I also learned he'd served two tours in Vietnam and escorted/guarding a lot of convoys from Saigon to one air base or another.
Last week we were sitting in a meeting where I was running sound and presentation video, and he was riding shotgun to my right. I said something and he squinted like he was aggravated as he tried to listen to me. It was THEN I learned for the first time that he is nearly deaf in his left ear from his time in Vietnam, guarding B-52s . . . for there were times when he couldn't listen for other sounds with earmuffs on.
Yep . . . some folks don't talk much . . .