I'm not a U-2 pilot, but know a few....don't know any of their stories - which is a good thing. I highly doubt the "blue eyes" and "headlines" as well (3lb vs 30lb bass) -- but doesn't the story only need to be 10% truthful to be, well, FACT?
HOWEVER - we all know that there are stories out there of missions that couldn't be discussed at the time which would contradict any written account. Heck in my meager career as a AF pilot (17 yrs), there are plenty of missions I've never discussed. Pending this veteran's age, it likely that he wanted to share some of the "walked 3 miles up hill both directions" stories....I'm sure we'll all be there someday.