Stock Photo - In an occurrence which became somewhat of a tradition for shuttle crews and those of the International Space Station expeditions, the Expedition 28 crew and the STS-135 Atlantis astronauts formed a microgravity circle for a portrait aboard the orbiting complex's Kibo laboratory of the Japan Aerospace Exploration Agency. The STS-135 crew consists of NASA astronauts Chris Ferguson, Doug Hurley, Sandy Magnus and Rex Walheim; the Expedition 28 crewmembers are JAXA astronaut Satoshi Furukawa, NASA astronauts Ron Garan and Mike Fossum, and Russian cosmonauts Andrey Borisenko, Alexander Samokutyaev and Sergei Volkov. Shuttle and station commanders Ferguson and Borisenko are in the 12 o'clock and six o'clock positions, respectively, on the circle. The U.S. flag pictured was flown on the first space shuttle mission, STS-1, and flew on this mission to be presented to the space station crew. It will remain onboard until the next crew launched from the U.S. will retrieve it for return to Earth. It will fly from Earth again, with the crew that launches from the U.S. on a journey of exploration beyond Earth orbit.