Remarks: "Discovery" is wheeled out of its hanger on the special truck with many wheels. She has been in the Orbital Processing Facility #3 since her last flight. The orbiter undergoes safing procedures in the OPF which include removing residual fuels and explosive ordnance items. Then the orbiter's previous mission payloads are removed and the vehicle is fully inspected, tested, and refurbished for its next mission.
