1943年5月27日，英国奥尔康伯里空军基地，美国陆军航空军第95轰炸机大队二架 B-17F 轰炸机在航弹意外爆炸事故中损毁，事故造成19名机组人员丧生，21人受伤，爆炸是由42-29685号B-17F携带的一枚500磅航空炸弹引起的。（Two of the B-17 Flying Fortresses that were damaged by an explosion at RAF Alconbury May 27, 1943, sit on the flightline. Nineteen U.S. Army Air Force 95th Bombardment Group airmen were killed and 21 others were injured when a 500-pound bomb detonated on the flightline. A memorial plaque was placed in their honor at Alconbury Airfield May 27, 2013.）