VANDENBERG AIR FORCE BASE, Calif. -- Inside the mobile service tower at NASA's Launch Complex-2 at Vandenberg Air Force Base in California, workers prepare to install the Aquarius/SAC-D spacecraft into the United Launch Alliance’s Delta II payload fairing. Aquarius will be integrated to the Delta II rocket in preparation for the targeted June 9 liftoff. Aquarius, the NASA-built instrument on the SAC-D spacecraft, will provide new insights into how variations in ocean surface salinity relate to fundamental climate processes on its three-year mission. Photo credit: NASA/VAFB

VANDENBERG AIR FORCE BASE, Calif. -- Inside the mobile service tower at NASA's Launch Complex-2 at Vandenberg Air Force Base in California, a technician secures the United Launch Alliance’s Delta II payload fairing around the Aquarius/SAC-D spacecraft. Aquarius will be integrated to the Delta II rocket in preparation for the targeted June 9 liftoff. Aquarius, the NASA-built instrument on the SAC-D spacecraft, will provide new insights into how variations in ocean surface salinity relate to fundamental climate processes on its three-year mission. Photo credit: NASA/VAFB

VANDENBERG AIR FORCE BASE, Calif. -- Inside the mobile service tower at NASA's Launch Complex-2 at Vandenberg Air Force Base in California, workers secure the United Launch Alliance’s Delta II payload fairing around the Aquarius/SAC-D spacecraft. Aquarius will be integrated to the Delta II rocket in preparation for the targeted June 9 liftoff. Aquarius, the NASA-built instrument on the SAC-D spacecraft, will provide new insights into how variations in ocean surface salinity relate to fundamental climate processes on its three-year mission. Photo credit: NASA/VAFB

VANDENBERG AIR FORCE BASE, Calif. -- Inside the mobile service tower at NASA's Launch Complex-2 at Vandenberg Air Force Base in California, workers prepare the Aquarius/SAC-D spacecraft for fairing installation. Aquarius will be integrated to a United Launch Alliance Delta II rocket in preparation for the targeted June 9 liftoff. Aquarius, the NASA-built instrument on the SAC-D spacecraft, will provide new insights into how variations in ocean surface salinity relate to fundamental climate processes on its three-year mission. Photo credit: NASA/VAFB

VANDENBERG AIR FORCE BASE, Calif. -- Inside the mobile service tower at NASA's Launch Complex-2 at Vandenberg Air Force Base in California, workers monitor the progress as the United Launch Alliance’s Delta II payload fairing closes around the Aquarius/SAC-D spacecraft. Aquarius will be integrated to the Delta II rocket in preparation for the targeted June 9 liftoff. Aquarius, the NASA-built instrument on the SAC-D spacecraft, will provide new insights into how variations in ocean surface salinity relate to fundamental climate processes on its three-year mission. Photo credit: NASA/VAFB

VANDENBERG AIR FORCE BASE, Calif. -- Inside the mobile service tower at NASA's Launch Complex-2 at Vandenberg Air Force Base in California, technicians secure the United Launch Alliance’s Delta II payload fairing around the Aquarius/SAC-D spacecraft. Aquarius will be integrated to the Delta II rocket in preparation for the targeted June 9 liftoff. Aquarius, the NASA-built instrument on the SAC-D spacecraft, will provide new insights into how variations in ocean surface salinity relate to fundamental climate processes on its three-year mission. Photo credit: NASA/VAFB

VANDENBERG AIR FORCE BASE, Calif. -- Inside the mobile service tower at NASA's Launch Complex-2 at Vandenberg Air Force Base in California, the Aquarius/SAC-D spacecraft is secure inside the United Launch Alliance’s Delta II payload fairing. Aquarius will be integrated to the Delta II rocket in preparation for the targeted June 9 liftoff. Aquarius, the NASA-built instrument on the SAC-D spacecraft, will provide new insights into how variations in ocean surface salinity relate to fundamental climate processes on its three-year mission. Photo credit: NASA/VAFB