At NASA's Kennedy Space Center in Florida, space shuttle Discovery now is attached to its external fuel tank and twin solid rocket boosters atop the mobile launcher platform in the Vehicle Assembly Building.
Engineers are preparing the shuttle for its rollout to Launch Pad 39A, which is scheduled for March 2 at 12:01 a.m. EST.
The STS-131 astronauts are conducting a deorbit integrated simulation today at NASA's Johnson Space Center in Houston.
Discovery's crew will head to Kennedy early next month to participate in the Terminal Countdown Demonstration Test, or TCDT, and related prelaunch training.