Diana Nyad, positioned about than two miles off Key West, Florida in this September 2, 2013 handout photo, swims towards the completion of her 111-mile trek from Cuba to the Florida Keys. Nyad, 64, became the first swimmer to cross the Florida Straits without the security of a shark cage. The white underwater streamer, trailing from the support boat's boom, serves as a navigation aide for Nyad. [Photo/Agencies]
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