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KENNEDY SPACE CENTER, FLA. - Matt Lauer, co-anchor of NBC News’ Today, talks with astronaut Pam Melroy about the pending launch at 3:51 p.m. of Space Shuttle Discovery on the historic Return to Flight mission STS-114. Melroy has flown on two missions, STS-92 and STS-112. 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.