I think it might be Hill AFB, Ogden Utah
"Following American entry into
World War II in December 1941, Hill Field quickly became an important maintenance and supply base, with round-the-clock operations geared to supporting the war effort. Battle-worn warplanes like the
A-26,
B-17,
B-24,
B-29,
P-40,
P-47,
P-61, were sent to Hill Field for structural repairs, engine overhauls, and spare parts. The peak wartime employment at Hill Field was reached in 1943 with a total of just over 22,000 military and civilian personnel. "