Building airstrips for the U.S. armed forces campaign across the Pacific was the primary task of the 857th EAB. In this work, a pilot's mechanic is inspecting a Republic P-47D Thunderbolt. The red flame design on the cowling, the year and place would indicate that the aircraft was from the 35th Fighter Group, 40th Fighter Squadron. The 40th FS, Fightin' Red Devils, flew the P-47 "JUG" in many critical campaigns over the Pacific. The 40th FS website link is below.