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KENNEDY SPACE CENTER, FLA. - In NASA Kennedy Space Center’s Vehicle Assembly Building, a worker watches as external tank #120 is being lowered toward the floor of the building. It will be lowered to a horizontal position and placed on a transporter to wait for the return of the Pegasus barge from delivering tank #119 to Louisiana. In a few weeks, tank #120 will also be returned to NASA’s Michoud Assembly Facility in Louisiana for routine testing and maintenance. This tank is the first of the newly designed tanks that were delivered to Kennedy. Previously stacked with Discovery, the tank has already gone through two tanking cycles during tanking tests but was replaced with tank #121 for Discovery’s return to flight mission STS-114