(04/23/2000) -- After rollback of the Rotating Service Structure (far left) on Launch pad 39A, Space Shuttle Atlantis looks pristine bathed in light from below. Atlantis is targeted for liftoff at 4:15 p.m. EDT April 24 on mission STS-101. The mission will take the crew of seven to the International Space Station to deliver logistics and supplies and prepare the Station for the arrival of the Zvezda Service Module, expected to be launched by Russia in July 2000. Also, the crew will conduct one space walk. This will be the third assembly flight to the Space Station