Processing Facility 1 at NASA's Kennedy Space Center is being prepared for final close out.

Inside Orbiter Processing Facility-1 at NASA’s Kennedy Space Center in Florida, space shuttle Discovery’s access hatch is being prepared for final close out.

The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Discovery, which is being prepared for display at Smithsonian’s National Air and Space Museum, Steven F. Udvar-Hazy Center in Chantilly, Va. Discovery is scheduled to be transported atop a NASA Shuttle Carrier Aircraft modified 747 jet to Dulles International Airport in Virginia on April 17 and then be transported to the Smithsonian on April 19. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann