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Associated Press
In this photo provided by NASA, the space shuttle Discovery is suspended from a sling held by two cranes as the Boeing 747 is backed away at Washington Dulles International Airport, Thursday, April 19, 2012, in Sterling, Va.  NASA will transfer Discovery into its new home at the Smithsonian's National Air and Space Museum annex. (AP Photo/NASA, Bill Ingalls) MANDATORY CREDIT

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