NASA officials announce the final launch date of Aug. 27 for mission STS-115.

At a press conference following the Flight Readiness Review, a thorough assessment of preparations for the mission, NASA officials announce the final launch date of Aug. 27 for mission STS-115. Seated left to right are Michael Griffin, NASA administrator; Bill Gerstenmaier, associate administrator for Space Operations; Wayne Hale, Space Shuttle Program manager; and Mike Leinbach, NASA launch director. They also answered questions from the media. Mission STS-115 continues the assembly of the International Space Station with the installation of the truss segments P3 and P4. Liftoff of Space Shuttle Atlantis on mission STS-115 is targeted at approximately 4:30 p.m. EDT on Aug. 27. Photo credit: NASA/Kim Shiflett