Space Shuttle Program Director Wayne Hale is on hand to watch the historic moment of Space Shuttle Discovery's rollout to Launch Pad 39B.

Space Shuttle Program Director Wayne Hale is on hand to watch the historic moment of Space Shuttle Discovery's rollout to Launch Pad 39B. First motion of the shuttle (seen in the background) from NASA's Vehicle Assembly Building was at 12:45 p.m. EDT. The rollout is an important step before launch of Discovery on mission STS-121 to the International Space Station. Discovery's launch is targeted for July 1 in a launch window that extends to July 19. During the 12-day mission, Discovery's crew will test new hardware and techniques to improve shuttle safety, as well as deliver supplies and make repairs to the station. Photo credit: NASA/Kim Shiflett