Staff members at the Army Experience Center in Philadelphia demonstrate the Humvee interactive simulator in 2009. Matt Rourke/AP hide caption

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When you think of Wookiees, you think of Chewy, don't you? Ethan Miller/Getty Images North America hide caption

toggle caption Ethan Miller/Getty Images North America

Smart bandages, including this one from Corventis, can transmit cardiac data in real time from a patient's body to a doctor. Courtesy of Mark Dastrup hide caption

toggle caption Courtesy of Mark Dastrup

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