Lee Archambault, Dominic Antonelli, Joseph Acaba, Steven Swanson, Richard Arnold, John Phillips, Koichi Wakata (up), Sandra Magnus (down) 39887 39900 12d:19h:30m ISS assembly flight 15A, installed the S6 integrated truss and fourth set of solar arrays, exchanged crewmembers Wakata & Magnus; 3 EVA for 3 crew totaling 19h:04m.