NASA's space shuttle Atlantis and its 747 carrier taxied on the Edwards Air Force Base flightline as the unusual combination left for Kennedy Space Center, Florida, on March 1, 2001

NASA's space shuttle Atlantis and its 747 carrier taxied on the Edwards Air Force Base flightline as the unusual combination left for Kennedy Space Center, Florida, on March 1, 2001.
Atlantis and the shuttle Columbia were both airborne on the same day as they migrated from California to Florida. Columbia underwent refurbishing at nearby Palmdale, California.