KENNEDY SPACE CENTER, FLA. - The barge carrying a newly redesigned External Tank (ET-121) designated for use on Return to Flight mission STS-121 approaches Port Canaveral after its 900-mile journey at sea from the Michoud Assembly Facility in New Orleans. It is being towed by NASA’s Solid Rocket Booster Retrieval Ship Freedom Star. At Port Canaveral, the barge will be hooked up to tugs for the last part of the journey to the Launch Complex 39 Area Turn Basin at NASA’s Kennedy Space Center. It will then be offloaded and transported to the Vehicle Assembly Building.