Eugene Montgomery passes a .50 cal machine gun up to Lloyd Kershaw, leaning out of the "green house" at Yangkai Airbase, China, in March 1944. They were preparing "Old '59'" for the beginning of its trip back to the USA where the the war weary B-25 and its original crew, from the 491st "Ringer Squadron" would tour on a War Bond drive.
See the same image with additional caption here.
(Info courtesy Tony Strotman)