Space Shuttle Discovery arrives at Dulles International Airport in Virginia

Space Shuttle Discovery, riding atop NASA's 747 shuttle carrier aircraft, does a flyby of Dulles International Airport in Chantilly, Virginia on April 17, 2012. Discovery, which ended it's last mission on March 9, 2011, is being put on permanent display at the Smithsonian's National Air and Space MuseumÍs Udvar-Hazy Center in Chantily, Virginia. UPI/Kevin Dietsch