Leopold and Loeb, U2 Spy Plane, Chewing Gum

Hidden in the Kansas Museum of History in Topeka is a piece of machinery that inadvertently contributed to one of the nation's most tragic natural disasters. On display at the Connecticut Air and Space Center is a craft that may alter the story of man's first flight. And the Cold War Museum in Virginia is home to a deadly contraption that is linked to one of the most perilous top secret missions in U.S. history.

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