On September 9, 1944 the 390th Bomb Group attacked a target in Dusseldorph, Germany and suffered its second largest single mission loss of the war. Over the target just prior to bomb release, one of the low squadron B17s was hit in the Bomb bay by flak. The 1000 Lb. bombs exploded and nine of the twelve aircraft in the squadron were instantly destroyed or knocked out of formation.
Six of the nine went down over the target, one flew two hours on a single engine and landed at Paris, another "cripple" landed in Belgium and the other struggled back to its home base and landed long after the other thirty nine B17s had returned from the mission. The one that came home was "Liberty Belle", she went on to complete 64 combat missions before being salvaged on February 18, 1945.