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Associated Press
AP10ThingsToSee - Solar Impulse, piloted by Andre Borschberg, takes flight during the second leg of the 2013 Across America mission, at dawn, Wednesday, May 22, 2013, from Sky Harbor International Airport in Phoenix. The plane's creators said the trip is the first attempt by a solar airplane capable of flying day and night without fuel across the United States. (AP Photo/Matt York)

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