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The Space Shuttle Enterprise sits on display at the Sea, Air and Space Museum's Space Shuttle Pavilion Wednesday, July 18, 2012, in New York. The Pavilion will be open to the public Thursday, July 19, 2012.(AP Photo/Frank Franklin II)

The Space Shuttle Enterprise sits on display at the Sea, Air and Space Museum's Space Shuttle Pavilion Wednesday, July 18, 2012, in New York. The Pavilion will be open to the public Thursday, July 19, 2012.(AP Photo/Frank Franklin II)