The 528th Air Defense Group is a disbanded United States Air Force organization. Its last assignment was with the 4711th Air Defense Wing at Presque Isle Air Force Base, Maine, where it was inactivated on 18 August 1955. The group was originally activated as the 528th Air Service Group, a support unit for the 97th Bombardment Group at the end of World War II in Italy.

The 4711th Air Defense Wing is a discontinued United States Air Force organization. Its last assignment was with the 30th Air Division of Air Defense Command (ADC) at Selfridge Air Force Base, Michigan, where it was discontinued in 1956. It was established in 1952 at Presque Isle Air Force Base, Maine as the 4711th Defense Wing in a general reorganization of Air Defense Command (ADC), which replaced wings responsible for a base with wings responsible for a geographical area.