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KENNEDY SPACE CENTER, FLA. -- A United Space Alliance external tank technician has completed the removal of a layer of BX265 foam insulation from the LO2 feed line bracket on the external tank. The BX265 foam insulation will later be reapplied without the super lightweight ablator, or SLA, cork insulation. The tank is scheduled to fly on Space Shuttle Discovery in October 2007 on mission STS-120. Discovery's crew will add the module Harmony that will serve as a port for installing additional international laboratories. Harmony will be the first expansion of the living and working space on the complex since the Russian Pirs airlock was installed in 2001. The mission also will move the first set of solar arrays installed on the station to a permanent location on the complex and redeploy them. Photo credit: NASA/Jim Grossmann