We had the B-17 and the B-24 visit our local airport about a month ago and the b-17 pilot and two paramedics escorted a man through the plane. He had flown over Europe as a flight engineer and wanted to sit in his old seat one more time. One of my close friends was a front turret gunner in a B-24 flying out of Italy. When I asked how close he was to his 25th mission he was when he was shot down over Poland, he told me he knows he flew over 35 missions. He claimed the 25 mission deal was late war to bring crews back to the US for bond drives and public relations tours!