CAPE CANAVERAL, Fla. -- In the Space Station Processing Facility at NASA Kennedy Space Center in Florida, the Space Test Program-Houston-3, or STP-H3, payload is lowered onto the Express Logistics Carrier-3, or ELC-3. STP-H3 is a compliment of four individual Department of Defense experiments that will test concepts in low earth orbit for long duration flights. As the final planned mission of the Space Shuttle Program, shuttle Endeavour and its STS-134 crew will deliver the Alpha Magnetic Spectrometer, the ELC-3 as well as critical spare components to the International Space Station. Endeavour is targeted for launch Feb. 26, 2011. For more information visit, http://www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts134/index.html. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- In the Space Station Processing Facility at NASA Kennedy Space Center in Florida, the lift ground support equipment transports the Space Test Program-Houston-3, or STP-H3, payload toward the Express Logistics Carrier-3, or ELC-3. STP-H3 is a compliment of four individual Department of Defense experiments that will test concepts in low earth orbit for long duration flights. As the final planned mission of the Space Shuttle Program, shuttle Endeavour and its STS-134 crew will deliver the Alpha Magnetic Spectrometer, the ELC-3 as well as critical spare components to the International Space Station. Endeavour is targeted for launch Feb. 26, 2011. For more information visit, http://www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts134/index.html. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- In the Space Station Processing Facility at NASA Kennedy Space Center in Florida, a technician finalizes quality assurance paperwork before the Space Test Program-Houston-3, or STP-H3, payload is installed onto the Express Logistics Carrier-3, or ELC-3. STP-H3 is a compliment of four individual Department of Defense experiments that will test concepts in low earth orbit for long duration flights. As the final planned mission of the Space Shuttle Program, shuttle Endeavour and its STS-134 crew will deliver the Alpha Magnetic Spectrometer, the ELC-3 as well as critical spare components to the International Space Station. Endeavour is targeted for launch Feb. 26, 2011. For more information visit, http://www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts134/index.html. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- In the Space Station Processing Facility at NASA Kennedy Space Center in Florida, the lift ground support equipment positions the Space Test Program-Houston-3, or STP-H3, payload over the Express Logistics Carrier-3 or ELC-3 for installation. STP-H3 is a compliment of four individual Department of Defense experiments that will test concepts in low earth orbit for long duration flights. As the final planned mission of the Space Shuttle Program, shuttle Endeavour and its STS-134 crew will deliver the Alpha Magnetic Spectrometer, the ELC-3 as well as critical spare components to the International Space Station. Endeavour is targeted for launch Feb. 26, 2011. For more information visit, http://www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts134/index.html. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- In the Space Station Processing Facility at NASA Kennedy Space Center in Florida, the Space Test Program-Houston-3, or STP-H3, payload is being prepared for installation onto the Express Logistics Carrier-3, or ELC-3. STP-H3 is a compliment of four individual Department of Defense experiments that will test concepts in low earth orbit for long duration flights. As the final planned mission of the Space Shuttle Program, shuttle Endeavour and its STS-134 crew will deliver the Alpha Magnetic Spectrometer, the ELC-3 as well as critical spare components to the International Space Station. Endeavour is targeted for launch Feb. 26, 2011. For more information visit, http://www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts134/index.html. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- As the lift of the Space Test Program-Houston-3, or STP-H3, payload begins in the Space Station Processing Facility at NASA Kennedy Space Center in Florida, workers inspect the bottom surface of the platform for sharp edges and cleanliness, prior to installation onto the Express Logistics Carrier-3, or ELC-3. STP-H3 is a compliment of four individual Department of Defense experiments that will test concepts in low earth orbit for long duration flights. As the final planned mission of the Space Shuttle Program, shuttle Endeavour and its STS-134 crew will deliver the Alpha Magnetic Spectrometer, the ELC-3 as well as critical spare components to the International Space Station. Endeavour is targeted for launch Feb. 26, 2011. For more information visit, http://www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts134/index.html. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- In the Space Station Processing Facility at NASA Kennedy Space Center in Florida, the Space Test Program-Houston-3, or STP-H3, is installed onto the Express Logistics Carrier-3, or ELC-3, after the lifting ground support equipment is removed. STP-H3 is a compliment of four individual Department of Defense experiments that will test concepts in low earth orbit for long duration flights. As the final planned mission of the Space Shuttle Program, shuttle Endeavour and its STS-134 crew will deliver the Alpha Magnetic Spectrometer, the ELC-3 as well as critical spare components to the International Space Station. Endeavour is targeted for launch Feb. 26, 2011. For more information visit, http://www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts134/index.html. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- In the Space Station Processing Facility at NASA Kennedy Space Center in Florida, the lift ground support equipment is lowered into place around the Space Test Program-Houston-3, or STP-H3, payload for installation onto the Express Logistics Carrier-3, or ELC-3. STP-H3 is a compliment of four individual Department of Defense experiments that will test concepts in low earth orbit for long duration flights. As the final planned mission of the Space Shuttle Program, shuttle Endeavour and its STS-134 crew will deliver the Alpha Magnetic Spectrometer, the ELC-3 as well as critical spare components to the International Space Station. Endeavour is targeted for launch Feb. 26, 2011. For more information visit, http://www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts134/index.html. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- In the Space Station Processing Facility at NASA Kennedy Space Center in Florida, the Space Test Program-Houston-3, or STP-H3, payload is being transported for installation onto the Express Logistics Carrier-3, or ELC-3. STP-H3 is a compliment of four individual Department of Defense experiments that will test concepts in low earth orbit for long duration flights. As the final planned mission of the Space Shuttle Program, shuttle Endeavour and its STS-134 crew will deliver the Alpha Magnetic Spectrometer, the ELC-3 as well as critical spare components to the International Space Station. Endeavour is targeted for launch Feb. 26, 2011. For more information visit, http://www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts134/index.html. Photo credit: NASA/Kim Shiflett