"Not many of these guys left." After Mrs Ww and I watched the Chicago one (I won't re-post it; YouTube zSF0S50c9c0), we were noting the same thing, the all-too-rapidly dwindling numbers, all those wheelchairs & canes, and I recalled, when we were children, there were still a few Civil War vets alive.
Measured by short human lifespans, WW2 or the Civil War especially were a long time ago, but I remember, as a kid reading war comics, being impressed by how WW2 had only ended so few years back. Europe was still rebuilding! Lots of modern folks have a perspective about as long as the last TV season, if that, but I think we ought to have the perspective that the Cold War, the World Wars, historically, they just happened. The dangers are not long ago and far away. They're still here and now.