John O'Brien, Fort Campbell historian and Director of the Don F. Pratt Memorial Museum, joins us with an explosive discussion about the Birdcage.

One of the nation's 13 Top Secret Nuclear Weapons Storage and Modification sites, Clarksville Base - better known as "The Birdcage" - is a 2,500 acre facility housing 28 underground structures and architecture unique to the Cold War. The compound operated far from wide public knowledge from from 1948-1965 and has since become a Cold War Historic District.