“Where would he have ever seen combat? PTSD? Not likely.”
He could have seen combat in Iraq and Afghanistan. Possibly in Somalia. Sometimes people see combat in places we never hear about.
That said, combat is not the only thing that can cause PTSD.
My husband met a fellow vet one day, and discovered they had a lot in common. The guy asked my husband if he’d ever been to some particular place, I forget where. My husband replied that he wasn’t there, in 1977. The other guy said he wasn’t there either, in 1976. They went on, discussing all the places they “hadn’t been.” Turns out, they had crossed paths several times.