Shuttle Discovery's official welcome

Crowds cheer as the space shuttle Discovery trades places with Enterprise at the National Air and Space Museum's Udvar-Hazy Center.

Finding any way they can, people in the crowd try to make photos during the ceremonial arrival of the NASA space shuttle Discovery at the National Air and Space Museum's Steven F. Udvar-Hazy Center in Chantilly, Va., on Thursday, April 19, 2012. (Rod Lamkey Jr./The Washington Times)

Finding any way they can, people in the crowd try to make photos during the ceremonial arrival of the NASA space shuttle Discovery at the National Air and Space Museum's Steven F. Udvar-Hazy Center in Chantilly, Va., on Thursday, April 19, 2012. (Rod Lamkey Jr./The Washington Times)

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