ISS028-E-020581 (3 Aug. 2011) --- Russian cosmonauts Alexander Samokutyaev and Sergei Volkov (out of frame), both Expedition 28 flight engineers, attired in Russian Orlan spacesuits, participate in a session of extravehicular activity on the Russian segment of the International Space Station. During the six-hour, 23-minute spacewalk, Volkov and Samokutyaev moved a cargo boom from one airlock to another, installed a prototype laser communications system and deployed an amateur radio micro-satellite.