Sandra Magnus ISS2

IN SPACE - JULY 9: In this handout image provided by the National Aeronautics and Space Administration (NASA), NASA astronauts Chris Ferguson, STS-135 commander, and Sandy Magnus, mission specialist, are pictured on the aft flight deck of the Earth-orbiting NASA space shuttle Atlantis on the second day of activity July 09, 2011 in space. Atlantis has embarked on a 12-day mission to the International Space Station where it will deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts. This will be the final launch of the space shuttle program, which began on April 12, 1981 with the launch of Colombia. (Photo by NASA via Getty Images)

Sandra Magnus ISS

IN SPACE - JULY 9: In this handout image provided by the National Aeronautics and Space Administration (NASA), NASA astronaut Sandy Magnus, STS-135 mission specialist works on the flight deck of the Earth-orbiting NASA space shuttle Atlantis on the second day of activity July 09, 2011 in space. Atlantis has embarked on a 12-day mission to the International Space Station where it will deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts. This will be the final launch of the space shuttle program, which began on April 12, 1981 with the launch of Colombia. (Photo by NASA via Getty Images)

Magnus Pre-Flight 5

CAPE CANAVERAL, FL - JUNE 22: In this handout image provided by the National Aeronautics and Space Administration (NASA), NASA space shuttle Atlantis STS-135 crew members (L-R) Commander Chris Ferguson, Pilot Doug Hurley, Mission Specialists Sandy Magnus and Rex Walheim gather at NASA Kennedy Space Center's Launch Pad 39A for a question-and-answer session with media June 22, 2011 in Cape Canaveral, Florida. The Atlantis mission STS-135, scheduled for July 8, will be the last space shuttle to launch into orbit and will end NASA space shuttle program. (Photo by NASA via Getty Images)

Magnus Pre-Flight 1

The STS-135 crew, clockwise: Sandra Magnus, mission specialist; Rex Walheim, mission specialist; Chris Ferguson, commander and Doug Hurley, pilot are seen in the Astrovan as they ride to launch pad 39A to board space shuttle Atlantis on Friday, July 8, 2011, at the Kennedy Space Center in Cape Canaveral, Fla. The launch of Atlantis, STS-135, is the final flight of the shuttle program, a 12-day mission to the International Space Station. Photo Credit: (NASA/Jerry Ross)

Magnus Pre-Flight2

Getty/Roberto Gonzalez

Magnus Pre-Flight 3

CAPE CANAVERAL, FL - JUNE 23: In this handout image provided by the National Aeronautics and Space Administration (NASA), NASA space shuttle Atlantis STS-135 crew members (L-R) Commander Chris Ferguson, Pilot Doug Hurley, Mission Specialists Sandy Magnus and Rex Walheim pose for a group photo after completing a simulated pad emergency exit training on Launch Pad 39 at NASA Kennedy Space Center's June 23, 2011 in Cape Canaveral, Florida. The Atlantis mission STS-135, scheduled for July 8, will be the last space shuttle to launch into orbit and will end NASA space shuttle program. (Photo by NASA via Getty Images

Magnus Pre-Flight 4

Getty/AFP/Bruce Weaver