The walk from the Operations and Checkout Building to the Astrovan which will take to Space Shuttle Atlantis.

The STS-101 crew walk from the Operations and Checkout Building to the Astrovan, which will take them to Space Shuttle Atlantis on Launch Pad 39A for a simulated countdown exercise. Leading the way are (left) Pilot Scott J. "Doc" Horowitz and (right) Commander James D. Halsell Jr. In the second row are Mission Specialists (left) Mary Ellen Weber and (right) Jeffrey N. Williams. In the third row are Mission Specialists (left) James Voss, (waving) Susan J. Helms, and (right) Yury Usachev of Russia. The dress rehearsal for launch is part of Terminal Countdown Demonstration Test (TCDT) activities that include emergency egress training and familiarization with the payload. 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