Cheyenne Mountain Complex - Wikipediahttps://en.wikipedia.org/wiki/Cheyenne_Mountain_Complex
1965 Cheyenne Mountain Complex
NORAD and The Cheyenne Mountain Complex - YouTubehttps://www.youtube.com/watch?v=fo5iM2NaArI
1965 Cheyenne Mountain Complex

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1965 Cheyenne Mountain Complex
1958 North American Aerospace Defense Command (NORAD)Colorado