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KENNEDY SPACE CENTER, FLA. -- STS-120 Commander Pam Melroy addresses the media following the arrival of the STS-120 crew at NASA's Kennedy Space Center Shuttle Landing Facility aboard T-38 jet aircraft. The crew is at Kennedy to take part in terminal countdown demonstration test activities and also includes Pilot George Zamka and Mission Specialists Paolo Nespoli, Doug Wheelock, Stephanie Wilson, Scott Parazynski and Daniel Tani, who will remain of the International Space Station as a member of the Expedition 16 crew. The terminal countdown demonstration test provides astronauts and ground crews an opportunity to participate in various simulated countdown activities, including equipment familiarization and emergency training. The STS-120 mission will deliver the U.S. Node 2 module, named Harmony, aboard space shuttle Discovery to the International Space Station. Launch of Discovery on mission STS-120 is targeted for Oct. 23 at 11:38 a.m. EDT on a 14-day mission to the International Space Station. Photo credit: NASA/Kim Shiflett