Gotcha. I had no clue, as I was born in 1975...
Here’s a good piece about Dennehy’s history of lying about serving in Vietnam.
https://www.dallasobserver.com/news/dont-tell-glenna-whitley-youre-a-vet-if-you-aint-because-she-knows-were-lookin-at-you-brian-dennehy-7119877
It’s a shame. The man was a genuine Marine, and a fine actor, but he continually lied about having served in Vietnam. Even after he was busted for it in the late ‘90s, and apologized, he started lying about again a number of years later. Crazy.
You are just a puppy! ;-D