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During Terminal Countdown Demonstration Test (TCDT) activities at Launch Pad 39A, the STS-92 crew poses for a group photo. In the background is Space Shuttle Discovery. Standing, left to right, on the crawlerway ramp are Mission Specialists Koichi Wakata of Japan, Michael Lopez-Alegria, Jeff Wisoff, Bill McArthur and Leroy Chiao; Pilot Pam Melroy; and Commander Brian Duffy. The TCDT provides emergency egress training, simulated countdown exercises and opportunities to inspect the mission payloads in the orbiter's payload bay. STS-92 is scheduled to launch Oct. 5 at 9:30 p.m. EDT on the fifth flight to the International Space Station. It will carry two elements of the Space Station, the Integrated Truss Structure Z1 and the third Pressurized Mating Adapter. The mission is also the 100th flight in the Shuttle program.