There were no hangars at Yangkai AB, nor any airbase in China. This required all aircraft maintenance to be performed in the open, regardless of weather conditions. These 491st Bomb Squadron mechanics are changing engines on squadron aircraft #444, "Shark Mouth", in the spring of 1944. Frenchy Beaudetter, George Butsika, John Burns, John Aspinwall, Karl Hammett, Frank Bert, Frank Bates.
(Info courtesy Tony Strotman)