Wright-Patterson Air Force Base – is a USAF base and census-designated place just east of Dayton, Ohio in Greene and Montgomery counties. Patterson Field is located approximately 10 miles (16 km) NE of Dayton; Wright Field is located approx. 5 miles (8.0 km) NE of Dayton. Wright-Patterson AFB is the largest base of the USAF. The host unit is the 88th Air Base Wing (88 ABW), assigned to the Air Force Life Cycle Management Center and Air Force Materiel Command.