STS-92 Commander Brian Duffy is seated at the controls of Discovery to take in a simulated countdown.

STS-92 Commander Brian Duffy is seated at the controls of Discovery to take part in 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