JOHNSON SPACE CENTER, Houston, Texas --- JSC2011-E-026188 --- NASA astronaut Doug Hurley, pilot. Photo credit: NASA or National Aeronautics and Space Administration

JOHNSON SPACE CENTER, Houston, Texas --- STS135-S-002 --- Attired in training versions of their shuttle launch and entry suits, these four astronauts take a break from training to pose for the STS-135 crew portrait. Pictured are NASA astronauts Chris Ferguson (center right), commander; Doug Hurley (center left), pilot; Rex Walheim and Sandy Magnus, both mission specialists. Photo credit: NASA or National Aeronautics and Space Administration

JOHNSON SPACE CENTER, Houston, Texas --- JSC2011-E-036274 --- NASA astronaut Rex Walheim, mission specialist. Photo credit: NASA or National Aeronautics and Space Administration

JOHNSON SPACE CENTER, Houston, Texas --- JSC2011-E-039719 --- NASA astronaut Sandy Magnus, mission specialist. Photo credit: NASA or National Aeronautics and Space Administration

JOHNSON SPACE CENTER, Houston, Texas --- JSC2011-E-026189 --- NASA astronaut Chris Ferguson, commander. Photo credit: NASA or National Aeronautics and Space Administration

S135-E-008048 (15 July 2011) --- 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 microgravity circle. Photo credit: NASA

S135-E-008075 (15 July 2011) --- The Expedition 28 crew and the STS-135 Atlantis astronauts take a break from a busy day in space to pose 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. The photo is arranged thusly: left to right in the front row are Fossum, Ferguson, Borisenko and Garan; in the middle row are Magnus and Samokutyaev; and the back row consists of Hurley, Walheim, Volkov and Furukawa. Photo credit: NASA

S135-E-008047 (15 July 2011) --- 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 microgravity circle. Photo credit: NASA

S135-E-008082 (15 July 2011) --- The Expedition 28 crew and the STS-135 Atlantis astronauts take a break from a busy day in space to pose 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. The photo is arranged thusly: left to right in the front row are Fossum, Ferguson Borisenko and Garan; in the middle row are Magnus and Samokutyaev; and the back row consists of Hurley, Walheim, Volkov and Furukawa. Photo credit: NASA

CAPE CANAVERAL, Fla. -- At Launch Pad 39A at NASA's Kennedy Space Center in Florida, the STS-135 crew pose for a group portrait in front of space shuttle Atlantis' hatch in the pad's White Room. From left are Mission Specialist Sandy Magnus, Pilot Doug Hurley, Mission Specialist Rex Walheim and Commander Chris Ferguson. An access arm supports the White Room that is in place against the shuttle which provides entry to the crew compartment. The astronauts are at Kennedy to participate in a launch countdown dress rehearsal called the Terminal Countdown Demonstration Test (TCDT) and related training. Atlantis and its crew are targeted to lift off July 8, taking with them the Raffaello multi-purpose logistics module packed with supplies and spare parts to the International Space Station. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing satellites and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- At Launch Pad 39A at NASA's Kennedy Space Center in Florida, the STS-135 crew pose for a group portrait in front of space shuttle Atlantis' hatch in the pad's White Room. From left are Mission Specialist Sandy Magnus, Pilot Doug Hurley, Mission Specialist Rex Walheim and Commander Chris Ferguson. An access arm supports the White Room that is in place against the shuttle which provides entry to the crew compartment. The astronauts are at Kennedy to participate in a launch countdown dress rehearsal called the Terminal Countdown Demonstration Test (TCDT) and related training. Atlantis and its crew are targeted to lift off July 8, taking with them the Raffaello multi-purpose logistics module packed with supplies and spare parts to the International Space Station. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing satellites and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kim Shiflett

S135-E-008061 (15 July 2011) --- 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. Photo credit: NASA

S135-E-008059 (15 July 2011) --- 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. Photo credit: NASA

S135-E-008051 (15 July 2011) --- 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. Photo credit: NASA