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CAPE CANAVERAL, Fla. – At NASA's Kennedy Space Center in Florida, the 327-foot-tall Ares I-X rocket is the first vehicle processed on Launch Pad 39B other than the space shuttle since the Apollo Program's Saturn rockets were retired. The transfer of the pad from the Space Shuttle Program to the Constellation Program took place May 31. Pad modifications to support the Ares I-X include the removal of shuttle unique subsystems, such as the orbiter access arm and a section of the gaseous oxygen vent arm, and the installation of three 600-foot lightning towers, access platforms, environmental contr…