KENNEDY SPACE CENTER, FLA. - In the Vehicle Assembly Building at NASA’s Kennedy Space Center, workers inspect the newly installed liquid hydrogen bellows heater on External Tank 121. The new heater has been added to the feedline bellows to minimize the potential for ice and frost buildup. The tank has been designated to fly on Discovery for Return to Flight mission STS-114, which has a launch window extending from July 13 to July 31.
Album External_Tank