Diana Nyad, positioned about than two miles off Key West, Florida in this September 2, 2013 handout photo, is escorted by kayakers as she 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. [Photo/Agencies]

U.S. long-distance swimmer Diana Nyad, 64, reacts to a question, while lying on a stretcher, after completing her swim from Cuba to Key West, Florida, September 2, 2013.  [Photo/Agencies]