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Associated Press
In this photo provided by Diana Nyad via the Florida Keys News Bureau, endurance swimmer Diana Nyad is aided after she was pulled out of the water between Cuba and the Florida Keys early Tuesday, Aug. 21, 2012. Nyad has ended her fourth bid to swim from Cuba to Florida after four days of storms, jellyfish stings and shark threats. (AP Photo/Diana Nyad via the Florida Keys News Bureau, Christi Barli)

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