Photos: Shuttle Discovery tours DC
Space Shuttle Discovery in Washington DC
Credit: AFP/Getty Images
US space shuttle Discovery sitting atop NASA's 747 shuttle carrier aircraft flies above the National Mall in Washington on April 17, 2012 as it arrives from Kennedy Space Center in Florida to be displayed at the National Air and Space museum near the US capital. AFP PHOTO/Nicholas KAMM (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)
