During suitup STS-92 Mission Specialist Leroy Chiao gives thumbs up for launch.

During suitup in the Operations and Checkout Building, STS-92 Mission Specialist Leroy Chiao gives thumbs up for launch. With him (left) is VITT Mission Lead Roland Nedelkovich, from Houston. During the 11-day mission to the International Space Station, four extravehicular activities (EVAs), or spacewalks, are planned for construction. The payload includes the Integrated Truss Structure Z-1 and the third Pressurized Mating Adapter. The Z-1 truss is the first of 10 that will become the backbone of the Space Station, eventually stretching the length of a football field. PMA-3 will provide a Shuttle docking port for solar array installation on the sixth Station flight and Lab installation on the seventh Station flight. Launch is scheduled for 7:17 p.m. EDT. Landing is expected Oct. 22 at 2:10 p.m. EDT