Endeavour rolls toward the open doors of the Vehicle Assembly Building after leaving Orbiter Processing Facility bay 2.

Endeavour rolls toward the open doors of the Vehicle Assembly Building after leaving Orbiter Processing Facility bay 2. In the VAB, Endeavour will be stacked with its solid rocket boosters and external tank atop the Mobile Launcher Platform in high bay 3. Endeavour is scheduled to launch April 19 on mission STS-100, the ninth flight to the International Space Station