Shuttle's final salute caps off 30 years of Discovery (51 images)
NASA's Space Shuttle Discovery flew it's final flight on April 17, 2012, soaring over Washington, D.C. on it's way to a permanent installation at Dulles International Airport. After 30 years, NASA ended the space shuttle program last summer.
NASA's orbiters "Atlantis"(foreground) and "Discovery" meet on the tow way between the Vehicle Assembly Building and the Orbiter Processing Facility at the Kennedy Space Center, Florida on March 9, 2012. UPI/Joe Marino-Bill Cantrell
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