According to Wikipedia: "Cape Cod Air Force Station is a US Air Force station located in the northwest corner of the Massachusetts Military Reservation, USA, on Flatrock Hill. It consists of one PAVE PAWS radar station and is in continuous operation. The facility became operational April 4, 1980 as Cape Cod Missile Early Warning Station, but was renamed Cape Cod Air Force Station on January 5, 1982. The facility became home to the 6th Space Warning Squadron after the closure of the North Truro Air Force Station in North Truro, Massachusetts."