CAPE CANAVERAL, Fla. -- In the Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida, STS-134 Commander Mark Kelly, left, and Mission Specialist Roberto Vittori with the European Space Agency check out a tool they'll be using in space. The six STS-134 astronauts are at Kennedy participating in the Crew Equipment Interface Test (CEIT), which gives them an opportunity for hands-on training and familiarization of the payload they'll be delivering to the International Space Station. Space shuttle Endeavour is targeted to launch on the STS-134 mission Feb. 27, 2011. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts134/index.html. Photo credit: NASA/Cory Huston

CAPE CANAVERAL, Fla. -- In the Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida, STS-134 Mission Specialist Roberto Vittori with the European Space Agency, left, Commander Mark Kelly and Pilot Gregory H. Johnson check out tools and equipment they'll be using in space. The six STS-134 astronauts are at Kennedy participating in the Crew Equipment Interface Test (CEIT), which gives them an opportunity for hands-on training and familiarization of the payload they'll be delivering to the International Space Station. Space shuttle Endeavour is targeted to launch on the STS-134 mission Feb. 27, 2011. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts134/index.html. Photo credit: NASA/Cory Huston

CAPE CANAVERAL, Fla. -- In the Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida, STS-134 Mission Specialists Greg Chamitoff, left, Michael Finke and Andrew Feustel check out the camera they'll be snapping photos with in space. The six STS-134 astronauts are at Kennedy participating in the Crew Equipment Interface Test (CEIT), which gives them an opportunity for hands-on training and familiarization of the payload they'll be delivering to the International Space Station. Space shuttle Endeavour is targeted to launch on the STS-134 mission Feb. 27, 2011. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts134/index.html. Photo credit: NASA/Cory Huston

CAPE CANAVERAL, Fla. -- In the Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida, STS-134 Mission Specialists Michael Finke, left, Gregory Chamitoff and Andrew Feustel check out the heat shield tiles that protect space shuttles during re-entry. The six STS-134 astronauts are at Kennedy participating in the Crew Equipment Interface Test (CEIT), which gives them an opportunity for hands-on training with the tools and equipment they'll use in space and familiarization of the payload they'll be delivering to the International Space Station. Space shuttle Endeavour is targeted to launch on the STS-134 mission Feb. 27, 2011. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts134/index.html. Photo credit: NASA/Cory Huston

CAPE CANAVERAL, Fla. -- In the Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida, STS-134 Commander Mark Kelly, left, and Pilot Gregory H. Johnson check out tools and equipment they'll be using in space. The six STS-134 astronauts are at Kennedy participating in the Crew Equipment Interface Test (CEIT), which gives them an opportunity for hands-on training and familiarization of the payload they'll be delivering to the International Space Station. Space shuttle Endeavour is targeted to launch on the STS-134 mission Feb. 27, 2011. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts134/index.html. Photo credit: NASA/Cory Huston

CAPE CANAVERAL, Fla. -- In the Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida, STS-134 Mission Specialist Greg Chamitoff practices using a camera he'll be snapping photos with in space. The six STS-134 astronauts are at Kennedy participating in the Crew Equipment Interface Test (CEIT), which gives them an opportunity for hands-on training and familiarization of the payload they'll be delivering to the International Space Station. Space shuttle Endeavour is targeted to launch on the STS-134 mission Feb. 27, 2011. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts134/index.html. Photo credit: NASA/Cory Huston

CAPE CANAVERAL, Fla. -- In the Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida, STS-134 Commander Mark Kelly inspects the windows on space shuttle Endeavour. The six STS-134 astronauts are at Kennedy participating in the Crew Equipment Interface Test (CEIT), which gives them an opportunity for hands-on training with the tools and equipment they'll use in space and familiarization of the payload they'll be delivering to the International Space Station. Space shuttle Endeavour is targeted to launch on the STS-134 mission Feb. 27, 2011. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts134/index.html. Photo credit: NASA/Cory Huston

CAPE CANAVERAL, Fla. -- In the Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida, STS-134 Mission Specialist Andrew Feustel practices using a camera he'll be snapping photos with in space. The six STS-134 astronauts are at Kennedy participating in the Crew Equipment Interface Test (CEIT), which gives them an opportunity for hands-on training and familiarization of the payload they'll be delivering to the International Space Station. Space shuttle Endeavour is targeted to launch on the STS-134 mission Feb. 27, 2011. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts134/index.html. Photo credit: NASA/Cory Huston

CAPE CANAVERAL, Fla. -- In the Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida, STS-134 Mission Specialist Roberto Vittori with the European Space Agency, left, Commander Mark Kelly and Pilot Gregory H. Johnson check out tools and equipment they'll be using in space. The six STS-134 astronauts are at Kennedy participating in the Crew Equipment Interface Test (CEIT), which gives them an opportunity for hands-on training and familiarization of the payload they'll be delivering to the International Space Station. Space shuttle Endeavour is targeted to launch on the STS-134 mission Feb. 27, 2011. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts134/index.html. Photo credit: NASA/Cory Huston

CAPE CANAVERAL, Fla. -- In the Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida, STS-134 Mission Specialist Greg Chamitoff check outs tools and equipment he'll be using in space. The six STS-134 astronauts are at Kennedy participating in the Crew Equipment Interface Test (CEIT), which gives them an opportunity for hands-on training and familiarization of the payload they'll be delivering to the International Space Station. Space shuttle Endeavour is targeted to launch on the STS-134 mission Feb. 27, 2011. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts134/index.html. Photo credit: NASA/Cory Huston

CAPE CANAVERAL, Fla. -- In the Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida, STS-134 Pilot Gregory H. Johnson inspects the windows on space shuttle Endeavour. The six STS-134 astronauts are at Kennedy participating in the Crew Equipment Interface Test (CEIT), which gives them an opportunity for hands-on training with the tools and equipment they'll use in space and familiarization of the payload they'll be delivering to the International Space Station. Space shuttle Endeavour is targeted to launch on the STS-134 mission Feb. 27, 2011. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts134/index.html. Photo credit: NASA/Cory Huston

CAPE CANAVERAL, Fla. -- In the Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida, the STS-134 crew checks out the heat shield tiles that protect space shuttles during re-entry. From left, are Mission Specialists Greg Chamitoff and Andrew Feustel, Pilot Gregory H. Johnson, Commander Mark Kelly and Mission Specialist Roberto Vittori of the European Space Agency. The six STS-134 astronauts are at Kennedy participating in the Crew Equipment Interface Test (CEIT), which gives them an opportunity for hands-on training with the tools and equipment they'll use in space and familiarization of the payload they'll be delivering to the International Space Station. Space shuttle Endeavour is targeted to launch on the STS-134 mission Feb. 27, 2011. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts134/index.html. Photo credit: NASA/Cory Huston

CAPE CANAVERAL, Fla. -- In the Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida, STS-134 Pilot Gregory H. Johnson, left, and Commander Mark Kelly check out a tool they'll be using in space. The six STS-134 astronauts are at Kennedy participating in the Crew Equipment Interface Test (CEIT), which gives them an opportunity for hands-on training and familiarization of the payload they'll be delivering to the International Space Station. Space shuttle Endeavour is targeted to launch on the STS-134 mission Feb. 27, 2011. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts134/index.html. Photo credit: NASA/Cory Huston

CAPE CANAVERAL, Fla. -- In the Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida, STS-134 Mission Specialist Michael Finke check outs tools and equipment he'll be using in space. The six STS-134 astronauts are at Kennedy participating in the Crew Equipment Interface Test (CEIT), which gives them an opportunity for hands-on training and familiarization of the payload they'll be delivering to the International Space Station. Space shuttle Endeavour is targeted to launch on the STS-134 mission Feb. 27, 2011. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts134/index.html. Photo credit: NASA/Cory Huston

CAPE CANAVERAL, Fla. -- In the Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida, STS-134 Mission Specialists Andrew Feustel, left, Michael Finke and Greg Chamitoff look at space shuttle Endeavour's heat shield tiles, which will protect the spacecraft during re-entry. The six STS-134 astronauts are at Kennedy participating in the Crew Equipment Interface Test (CEIT), which gives them an opportunity for hands-on training and familiarization of the payload they'll be delivering to the International Space Station. Space shuttle Endeavour is targeted to launch on the STS-134 mission Feb. 27, 2011. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts134/index.html. Photo credit: NASA/Cory Huston

CAPE CANAVERAL, Fla. -- In the Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida, STS-134 Pilot Gregory H. Johnson inspects the windows on space shuttle Endeavour. The six STS-134 astronauts are at Kennedy participating in the Crew Equipment Interface Test (CEIT), which gives them an opportunity for hands-on training with the tools and equipment they'll use in space and familiarization of the payload they'll be delivering to the International Space Station. Space shuttle Endeavour is targeted to launch on the STS-134 mission Feb. 27, 2011. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts134/index.html. Photo credit: NASA/Cory Huston

CAPE CANAVERAL, Fla. -- In the Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida, STS-134 Mission Specialist Greg Chamitoff looks at space shuttle Endeavour's heat shield tiles, which will protect the spacecraft during re-entry. The six STS-134 astronauts are at Kennedy participating in the Crew Equipment Interface Test (CEIT), which gives them an opportunity for hands-on training and familiarization of the payload they'll be delivering to the International Space Station. Space shuttle Endeavour is targeted to launch on the STS-134 mission Feb. 27, 2011. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts134/index.html. Photo credit: NASA/Cory Huston

CAPE CANAVERAL, Fla. -- In the Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida, STS-134 Mission Specialist Roberto Vittori with the European Space Agency checks out a tool he'll be using in space. The six STS-134 astronauts are at Kennedy participating in the Crew Equipment Interface Test (CEIT), which gives them an opportunity for hands-on training and familiarization of the payload they'll be delivering to the International Space Station. Space shuttle Endeavour is targeted to launch on the STS-134 mission Feb. 27, 2011. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts134/index.html. Photo credit: NASA/Cory Huston

CAPE CANAVERAL, Fla. -- In the Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida, STS-134 Mission Specialists Greg Chamitoff, left, Michael Finke and Andrew Feustel check out the camera they'll be snapping photos with in space. The six STS-134 astronauts are at Kennedy participating in the Crew Equipment Interface Test (CEIT), which gives them an opportunity for hands-on training and familiarization of the payload they'll be delivering to the International Space Station. Space shuttle Endeavour is targeted to launch on the STS-134 mission Feb. 27, 2011. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts134/index.html. Photo credit: NASA/Cory Huston

CAPE CANAVERAL, Fla. -- In the Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida, STS-134 Mission Specialist Roberto Vittori with the European Space Agency, left, and Commander Mark Kelly check out tools and equipment they'll be using in space. The six STS-134 astronauts are at Kennedy participating in the Crew Equipment Interface Test (CEIT), which gives them an opportunity for hands-on training and familiarization of the payload they'll be delivering to the International Space Station. Space shuttle Endeavour is targeted to launch on the STS-134 mission Feb. 27, 2011. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts134/index.html. Photo credit: NASA/Cory Huston

CAPE CANAVERAL, Fla. -- In the Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida, STS-134 Commander Mark Kelly, left, and Mission Specialist Roberto Vittori with the European Space Agency check out the heat shield tiles that protect space shuttles during re-entry. The six STS-134 astronauts are at Kennedy participating in the Crew Equipment Interface Test (CEIT), which gives them an opportunity for hands-on training with the tools and equipment they'll use in space and familiarization of the payload they'll be delivering to the International Space Station. Space shuttle Endeavour is targeted to launch on the STS-134 mission Feb. 27, 2011. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts134/index.html. Photo credit: NASA/Cory Huston

CAPE CANAVERAL, Fla. -- In the Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida, STS-134 Mission Specialist Michael Finke practices using a camera he'll be snapping photos with in space. The six STS-134 astronauts are at Kennedy participating in the Crew Equipment Interface Test (CEIT), which gives them an opportunity for hands-on training and familiarization of the payload they'll be delivering to the International Space Station. Space shuttle Endeavour is targeted to launch on the STS-134 mission Feb. 27, 2011. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts134/index.html. Photo credit: NASA/Cory Huston