Space Shuttle Discovery Arrives In DC Area, To Be Permanently Housed At Smithsonian

CHANTILLY, VA - APRIL 17: Hailey Osborne, 12, gets a little adjustment help from her sister Maddie Osborne, 11, while trying on a toy space helmet in the gift shop at the Smithsonian National Air and Space Museum Steven F. Udvar-Hazy Center April 17, 2012 in Chantilly, Virginia. Hundreds of people gathered at the museum early in the morning to watch the arrival of the space shuttle Discovery is teathered to the back of a modified 747 jumbo jet. The oldest and most traveled vehicle in NASA's space shuttle program, Discovery will be placed on permanent display at the museum. (Photo by Chip Somodevilla/Getty Images)