The STS-92 crew exits the Operations and Checkout Building on their way to the Astrovan and Launch Pad 39A for a simulated countdown. On the left, front to back, are Pilot Pamela Ann Melroy and Mission Specialists Leroy Chiao, Peter J.K. “Jeff” Wisoff, and Koichi Wakata of Japan. On the right, front to back, are Commander Brian Duffy and Mission Specialists William S. McArthur Jr. and Michael E. Lopez-Alegria. The crew is taking part in Terminal Countdown Demonstration Test activities that provide emergency egress training, opportunities to inspect the mission payload, and the simulated countdown. STS-92 is scheduled to launch Oct. 5 at 9:38 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