I flew (twice) in the B17 that later crashed. I knew it was a risk. It was worth it. I would like to believe they are maintained by more than “rank” amateurs. I also flew in the P51. Thrill of a lifetime. My pilot was only 19. However, he had more hours than any other person in that plane. That was his full time job. Apparently, grew up next to an airport in Iceland. Flying since he was 12. The other pilots for the P51 are older, but part time.