The 13th Space Warning Squadron (13SWS) is a missile warning unit assigned to the United States Space Force and located at Clear Space Force Station 5 miles (8 km) south of Anderson, Alaska[1] The primary mission of the 13th SWS is to provide early warning of intercontinental ballistic missiles (ICBMs) and submarine-launched ballistic missiles (SLBMs) launches to the Missile Warning Center at North American Aerospace Defense Command.

The secondary mission of the 13SWS is to provide space surveillance data on orbiting objects to the Space Control Center also located in the Cheyenne Mountain Complex.

The 13th SWS is controlled by the Missile Warning Center, part of the NORAD, and by the Space Control Center, part of United States Strategic Command.

Both agencies are located at the Cheyenne Mountain Operations Center in Colorado.

Clear's radar was originally located at El Dorado Air Station, Texas as part of the PAVE PAWS program and was only recently transplanted to Alaska to replace the US' last mechanical missile warning radar site.