My father did two tours in Vietnam as a forward observer. He crawled through a ton of Agent Orange and it gave him the cancer that killed him in 2000.
58,000+ dead Americans, and another 300,000+ injured, in return for absolutely nothing. People like to say the Iraq War is the biggest foreign policy blunder in US history, but I think it's easily Vietnam. The more I read about the strategic thinking around it, the more puzzled I become.
My family has a whole chest full of film brought back from Vietnam, one titled "Bob Hope," others just saying "air strikes." His war buddies we've spoken to have said there is likely some really messed up stuff on them so getting it developed by strangers is a bad idea. One of these days we'll get it all digitized and see if there's anything for museums or whatever.