STS-101 Mission Specialists Yury Usachev Susan J. Helms and James Voss pose at Launch Pad 39A.

During a break in Terminal Countdown Demonstration (TCDT) activities, STS-101 Mission Specialists Yury Usachev, Susan J. Helms and James Voss pose at Launch Pad 39A. They are at the 195-foot level of the Fixed Service Structure for emergency egress training. In the background at right is the Vehicle Assembly Building. The TCDT also includes a simulated launch countdown and familiarization with the payload. Other crew members taking part are Commander James D. Halsell Jr., Pilot Scott J. "Doc" Horowitz and Mission Specialists Mary Ellen Weber and Jeffrey N. Williams. 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