USA PHOTO ESSAY COG
One of two 23-ton blast doors that serve as the primary entrance for the North American Aerospace Defense Command's (NORAD) facility inside the Cheyenne Mountain Air Force Station in Colorado Springs, Colorado, USA 10 May 2018. The secret government complex is built 2000 feet beneath the summit of the mountain, in a bunker that can withstand a 30 megaton nuclear bomb, an electromagnetic pulse, and chemical, biological, and radiological attacks. Steve Rose, 721st Mission Support Group Deputy Director, called it 'the most secure government facility in the world.' More than 300 people work inside Cheyenne Mountain, which they access via a two-mile long tunnel, and the two 23-ton blast doors. NORAD is tasked with aerospace control of North America, including the detection of an incoming missile attack.