"All I can say is God's speed to those boys," Tony said, raising his empty glass in mock salute. It was easy for him to say, no one was going to come after him or his non existent sons to send them to over to fight the Commies. His intellect was the only thing he would ever be asked to contribute, and here he was reluctant to even give that.
He sighed and waited until the bartender had filled both their glasses before he spoke again. Bad enough that someone might overhear anyway, better to not make it easy for them. "Much different place. For one thing, I know Vietnam. I know the enemy, I know the terrain, I know what they're willing to do to win. I don't think we even know what winning is. Can't fight a war without an objective. Sooner or later one side runs out of weapons and men." And he had a hunch which side that would be.
"Funny... wasn't supposed to be thinking about this once I had the glass in my hand. That was the plan for the night."