What do you think happened to Doc?
I just finished watching all three seasons in a month-long binge and it's great, took me a while to get into it, I found the initial few episodes sort of dull but pretty soon in to season 1 they start tackling bigger issues and I like how in S's 2&3 we get to see not just the jungle but Saigon too. Disappointed by the ending though as it really doesn't give much closure.
So what happened to Doc? Last thing we see he's walking down the street under fire and we never hear from him again. I kind of liked that ending for his character, actually. It was surreal and reminded me of a bit in a Vietnam novel by Tim O'Brien where a soldier gets up at night and walks off into the jungle and just disappears, as if the jungle swallowed him up.
Still, I'd really like a reunion, despite there's little chance of that, unless someone were to Kickstarter the project.