Know what you mean, I was back from Vietnam five years before I found out I wasn´t the only Legg grunt(non airborne) that served in Vietnam.
Most of these guys would say, "I was an _______________ (you fill in the blank) and I was dropped in behind enemy lines in North Vietnam."
When you aksed them what they did they would always come back with "Can´t talk about it, it´s classified."
A$$holes like this guy cause us Vietnam vets years of embarrassment with their "War stories" and lies.
Hell, I think I'm the only cook.
(If I was, sorry I burned your pancakes.)