My father had a good friend who flew as an observer on a B29 mission over Korea. After a dinner evening and a belly full of wine he talked about having with him an 8mm camera and was using it to film Mig15s making attacks on the B29 formation. It was apparently a very tense sortie and I do not know if any B29s went down but at least one Mig15 did. When they got back to the base he disovered that he hadn't removed the lens cover. He said how ill he felt at not capturing the event.
This guy had been a pilot on B26s during the big one. Was a great man! One evening he came over to the house for dinner (they did this often after my dad retired and I loved just hanging around after dinner listening to those two swap stories) and he brought with him a shoe box full of photos of his time during the war. I rcall hundreds of photos of crew poses, nose art, and combat shots. He is long since gone. I have often wondered what happened to that shoe box after the wife passed on. They had no children.