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CAPE CANAVERAL, Fla. – A new NASA helicopter circles space shuttle Discovery on Launch Pad 39A prior to launch on the STS-124 mission. To the left of the shuttle is the fixed service structure with the 80-foot lightning mast on top. The rotating service structure, normally closed around the shuttle, is open for liftoff. At right of the pad is the 300,000-gallon water tower that provides the water used for sound suppression on the pad during liftoff. In the background is the Atlantic Ocean. Discovery is making its 35th flight. The STS-124 mission is the 26th in the assembly of the space station. It is the second of three flights launching components to complete the Japan Aerospace Exploration Agency's Kibo laboratory.