Astronaut Michael E. Lopez-Alegria Expedition 14 commander participates as construction continues on the International Space Station.

Astronaut Michael E. Lopez-Alegria, Expedition 14 commander and NASA space station science officer, participates in the second of three sessions of extravehicular activity (EVA) in nine days, as construction continues on the International Space Station. During the spacewalk, Lopez-Alegria and Sunita L. Williams (out of frame), flight engineer, reconfigured the second of two cooling loops for the Destiny laboratory module, secured the aft radiator of the P6 truss after retraction and prepared the obsolete Early Ammonia Servicer (EAS) for removal this summer.