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KENNEDY SPACE CENTER, Fla. -- After Terminal Countdown Demonstration Test (TCDT) activities at Launch Pad 39A, the STS-101 crew answer questions from the media. Standing in the background (left to right) are moderator George Diller, with NASA Public Affairs; Commander James D. Halsell Jr., with the microphone; Pilot Scott J. "Doc" Horowitz; and Mission Specialists Mary Ellen Weber, Jeffrey N. Williams, James Voss, Susan J. Helms and Yuri Usachev of Russia. The TCDT includes emergency egress training and a simulated launch countdown. During their mission to the International Space Station, the STS-101 crew will be delivering logistics and supplies, plus preparing 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 to perform maintenance on the Space Station. This will be the third assembly flight for the Space Station. STS-101 is scheduled to launch April 24 at 4:15 p.m. from Launch Pad 39A