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Join us as we delve into the incredible engineering feat that is the Cheyenne Mountain Complex. Learn about the challenges faced and overcome during the construction of this underground fortress, and discover the cutting-edge technology that enables it to function as a command center for the North American Aerospace Defense Command. From the initial excavation to the final touches, this is the story of how one of the most secure military instillation in the world was built. The Cheyenne Mountain Complex is an incredible 4.5 acre compound center that monitors the skies for unidentified aircraft, missile launches, space objects, and even falling space debris. Welcome to Progress -- the home of history's greatest leaps forward. From the seismic invention of the world's first printing press to the great rocket-powered marvels that took us to the stars, we'll be bringing you world-class documentaries celebrating history's greatest inventions and technological breakthroughs. Pro
