Center Director Robert Cabana is on hand for the final power down of Discovery during Space Shuttle Program transition and retirement activities.

In Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida, Center Director Robert Cabana (center) is on hand for the final power down of space shuttle Discovery during Space Shuttle Program transition and retirement activities. "Power down" follows the final closure of Discovery's payload bay doors.

Discovery is being prepared for public display at the Smithsonian’s National Air and Space Museum Steven F. Udvar-Hazy Center in Chantilly, Va., in 2012. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann