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The STS-101 crew wave and smile at onlookers as they head to the Astrovan for the trip to Launch Pad 39A and the fourth attempt at launch of Space Shuttle Atlantis. In their orange launch and entry suits, they are (left to right) Mission Specialists Susan J. Helms, Yury Usachev of Russia, James S. Voss, Mary Ellen Weber, Jeffrey N. Williams; Pilot Scott “Doc” Horowitz; and Commander James D. Halsell Jr. The mission will take the crew to the International Space Station to deliver logistics and supplies and to 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 and will reboost the space station from 230 statute miles to 250 statute miles. This will be the third assembly flight to the Space Station. Liftoff of Space Shuttle Atlantis for the 10-day mission is scheduled for about 6:11 a.m. EDT from Launch Pad 39A. Landing is targeted for May 29 at 2:19 a.m. EDT