Russian Federal Space Agency cosmonaut Sergei K. Krikalev (right), Expedition 11 commander; astronaut William S. McArthur Jr. (center), Expedition 12 commander and NASA science officer; and U. S. Spaceflight Participant Gregory Olsen are pictured in the Destiny laboratory of the international space station following the ceremony of Changing-of-Command from Expedition 11 to Expedition 12.