A decade ago, I thought I would retire in my 60s. And yet here I am working in my 70s. The reality is that some of us don’t retire until we are into our 70s or even 80s. Some never plan to retire.

But in Asia, the U.S. was a direct participant in the Korean and Vietnam wars in the 1950s, 60s and 70s; hundreds of thousands of Americans fought and tens of thousands were killed and wounded.

American Pop Flashback! Great Hits of the '60s & '70s is available to stream on pbs.org and the free PBS App, available on iPhone, Apple TV, Android TV, Android smartphones, Amazon Fire TV ...