I did receive a private message from a Freeper who reported that Barry Romo, who is featured in one of the programs, is the National Coordinator of Vietnam Veterans Against the War. I can't remember if they mentioned that in the program, and I just didn't hear it. If they didn't mention it, it should have been.
The History Channel does include videos of the biographies of the vets shown in the series.
This link will take you to the page if you're interested:
Bios