I was looking through posts on Facebook, followed the link to the latest ArmA 3 Patch, and I noticed the following mod for ArmA 3:
The Unsung Vietnam War Mod for ArmA 3
I looked through the stuff they had available on the website, and so far it looks pretty good.
I did notice there are a few things that would (potentially) make goon's Vietnam Series of missions look and feel better.
I am planning on downloading it to see what all it has available to it.