STS-115 was a Space Shuttle mission to the International Space Station (ISS) flown by . It was the first assembly mission to the ISS after the "Columbia" disaster, following the two successful "Return to Flight" missions, STS-114 and STS-121. STS-115 launched from LC-39B at the Kennedy Space Center on 9 September 2006 at 11:14:55 EDT (15:14:55 UTC).