The crew responds to questions from the media at a conference on Launch Pad 39B.

The STS-115 crew responds to questions from the media at a press conference on Launch Pad 39B. Seen left to right are Commander Brent Jett, Mission Specialist Steven MacLean, Pilot Chris Ferguson, and Mission Specialists Daniel Burbank, Heidemarie Stefanyshyn-Piper and Joseph Tanner. MacLean is with the Canadian Space Agency. The mission crew is at KSC for Terminal Countdown Demonstration Test activities that are preparation for launch on Space Shuttle Atlantis, scheduled to take place in a window that opens Aug. 27. The TCDT culminates in a simulated launch countdown. During their 11-day mission to the International Space Station, the STS-115 crew will continue construction of the station and attach the payload elements, the Port 3/4 truss segment with its two large solar arrays. Photo credit: NASA/Cory Huston