STS115-S-052 (21 Sept. 2006) --- Just before dawn, the Space Shuttle Atlantis' main landing gear is about to touch down on runway 33 at Kennedy Space Center's Shuttle Landing Facility. Landing occurred at 6:21:36 a.m. (EDT) on Sept. 21, 2006. Onboard were astronauts Brent W. Jett, Jr., STS-115 commander; Christopher J. Ferguson, pilot; Joseph R. Tanner, Daniel C. Burbank, Heidemarie M. Stefanyshyn-Piper, and Canadian Space Agency astronaut Steven G. MacLean, all mission specialists. The return of Atlantis concludes the successful nearly 12-day mission to resume construction of the International Space Station by installing the P3/P4 integrated truss and solar arrays.