CAPE CANAVERAL, Fla. – In high bay 4 of the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, at right, technicians get ready to install the roll control system in the Ares I-X segment at left. Ares I-X is the test vehicle for the Ares I, which is part of the Constellation Program to return men to the moon and beyond. Ares I-X is targeted for launch in July 2009. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. –– In the lower right, the roll control system can be seen installed inside the Ares I-X segment. The work is being done in high bay 4 of the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida. Ares I-X is the test vehicle for the Ares I, which is part of the Constellation Program to return men to the moon and beyond. Ares I-X is targeted for launch in July 2009. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. –– In high bay 4 of the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, technicians are seen inside the Ares I-X segment installing the roll control system. Ares I-X is the test vehicle for the Ares I, which is part of the Constellation Program to return men to the moon and beyond. Ares I-X is targeted for launch in July 2009. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. –– In high bay 4 of the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, at left center, technicians install the roll control system in the Ares I-X segment in the center. Ares I-X is the test vehicle for the Ares I, which is part of the Constellation Program to return men to the moon and beyond. Ares I-X is targeted for launch in July 2009. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – In high bay 4 of the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, at left center, technicians get ready to install the roll control system in the Ares I-X segment in the center. Ares I-X is the test vehicle for the Ares I, which is part of the Constellation Program to return men to the moon and beyond. Ares I-X is targeted for launch in July 2009. Photo credit: NASA/Kim Shiflett