The few remaining survivors from the USS Arizona are all in their 90s now.
I remember learning that the last surviving veteran of the Civil War died two years after I was born. I was rather shocked because the Civil War was something that I’d always considered way, way, way in the past. It was quite a realization that my parents might well have known people who had served in the war.
It won’t be that much longer until kids are being born who will only know of WWII as some long ago historic event and as questions on a history test.