Cape Charles Air Force Station is a closed United States Air Force General Surveillance Radar station. It is located 3.6 miles (5.8 km) south of Townsend, Virginia. It was closed in 1981. From 1941 to 1948 it was Fort John Custis of the United States Army Coast Artillery Corps. Since 1984 the site has been in the Eastern Shore of Virginia National Wildlife Refuge. For this article's purposes the term "Fort John Custis" includes the nearby Fisherman Island.