A 491st Bomb Squadron aircraft on a formation mission in China, #439, "Rum Runner." It was destroyed in a crash landing at Liuzhou in June 1944.
Two more aircraft are silhouetted against the cloud in the background. They appear to also be B-25s, however, we are unable to identify whether they are also 491st or aircraft from the 11th Bm Sq. Planes from both squadrons flew many joint missions from February 1944 until the summer of 1945.