McCook AAF was one of eleven United States Army Air Forces training bases in Nebraska during World War II.

It operated with three divisions: Base Services (hospital, chapel, theater, band, gymnasium, fire station, post office, photo lab, library, and military police); Maintenance and Supply (air service groups, post engineers, machine shop, warehouses); and Training (celestial navigation, gunnery and bombing, communications, radar, and aircraft maintenance).

Bomber crew members received final proficiency training at the field before deployment in North Africa, Europe, and Pacific Theater of Operations.

About a dozen World War II-era buildings still exist at the former airfield in various states of deterioration including four of the hangars.

This article incorporates public domain material from the Air Force Historical Research Agency