Rare Look Inside Top-Secret CO Mountain Military Base

COLORADO SPRINGS, Colo. (CBS4) – The tunnel to the Air Force station inside Cheyenne Mountain is iconic. For 60 years, North American Aerospace Defense Command in Colorado Springs has been protecting North America primarily from that location.

denver.cbslocal.com/2018/05/11/tour-military-operation-cheyenne-mountain-norad/

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