Cosmonauts Sergei Volkov and Alexander Samokutyaev (out of frame), attired in Russian Orlan spacesuits, conducted a spacewalk on Wednesday, Aug. 3, 2011, on the Russian segment of the International Space Station. During the six-hour, 23-minute spacewalk, the Expedition 28 flight engineers moved a cargo boom from one airlock to another, installed a prototype laser communications system and deployed an amateur radio micro-satellite. Image Credit: NASA