Standing vigilant from the top of the world
THULE AIR BASE, Greenland – A rainbow arches above the 148-feet-tall, solid-state, phased-array radar system at Ballistic Missile Early Warning Site – I northwest of Thule Air Base, Greenland. The site is operated by the 12th Space Warning Squadron, a geographically separated unit of the 21st Space Wing at Peterson Air Force Base, Colorado. (Courtesy photo)