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KENNEDY SPACE CENTER, FLA. - Roger Crouch, a payload specialist, talks to the media prior to the launch at 3:51 p.m. of Space Shuttle Discovery on the historic Return to Flight mission STS-114. He has flown on two Shuttle missions, STS-83 and STS-94. STS-114 is the 114th Space Shuttle flight and the 31st for Discovery. The 12-day mission is expected to end with touchdown at the Shuttle Landing Facility at 11:06 a.m. July 25.