(09/15/2000) -- STS-92 Mission Specialists Koichi Wakata of Japan (left) and William S. McArthur Jr. (right) get settled in their seats in Discovery for a simulated countdown. The countdown is part of Terminal Countdown Demonstration Test (TCDT) activities that he and other crew members have been performing. 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