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KENNEDY SPACE CENTER, FLA. - Before welcoming the STS-115 crew on their return from space, NASA officials look at the underside of the orbiter Atlantis on the Shuttle Landing Facility. From right are NASA Administrator Michael Griffin, KSC Deputy Director Bill Parsons and Shuttle Launch Director Mike Leinbach. During the mission, astronauts completed three spacewalks to attach the P3/P4 integrated truss structure to the International Space Station. Main gear touchdown was at 6:21:30 a.m. EDT. Nose gear touchdown was at 6:21:36 a.m. and wheel stop was at 6:22:16 a.m. At touchdown -- nominally about 2,500 ft. beyond the runway threshold -- the orbiter is traveling at a speed ranging from 213 to 226 mph. Atlantis traveled 4.9 million miles, landing on orbit 187. Mission elapsed time was 11 days, 19 hours, six minutes. This is the 15th night landing at KSC and the 23rd night landing overall. Photo credit: NASA/Kim Shiflett