CMAFS 50th
PETERSON AIR FORCE BASE, Colo. - Cheyenne Mountain Air Force Station tunnel construction in 1962. April 20, 2016 marks a significant milestone in the history of national defense when Cheyenne Mountain celebrates its 50th anniversary. On that day in 1966, one of today’s modern engineering marvels was declared fully operational and began its diligent vigil protecting the nation. (courtesy photo)

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