Clear Air Force Station ("Clear" colloq.) is an Alaska Air National Guard radar station for detecting incoming ICBMs and submarine-launched ballistic missiles to NORAD's Missile Correlation Center (MCC) and to provide Space Surveillance data to Air Force Space Command's Space Control Center (SCC). Clear's AN/FPS-123 Upgraded Early Warning Radar is part of the Solid State Phased Array Radar System (SSPARS) which also includes those at Beale AFB, Cape Cod AFS, RAF Fylingdales and Thule Site J.