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.

People cheer and greet the NASA space shuttle Discovery as it is brought into the James S. McDonnell Space Hangar 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)

People cheer and greet the NASA space shuttle Discovery as it is brought into the James S. McDonnell Space Hangar 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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