North Truro Air Force Station (AFS) is a closed United States Air Force General Surveillance Radar station. It is located east of North Truro, Massachusetts. Most of the site was inactivated by 1994 and turned over to the National Park Service, the radar site remainder becoming an Federal Aviation Administration (FAA) VHF omnidirectional range/Tactical air navigation system (VORTAC) and radar site, part of the Joint Surveillance System (JSS), designated by NORAD as Northeast Air Defense Sector (NEADS) Ground Equipment Facility J-53.