Nightly News | September 11, 2013
>>> as we mentioned before the break, we are hearing tonight from diana nyad for the first time since those questions raised by doubters about her epic swim from cuba to key west . she was suspected in effect of cheating. last night, for hours, she defended her honor and her achievement. our report tonight from nbc's mark potter in miami.
>> i did this swim with my own body and my own mind, fair and square, squeaky clean. [ cheers ]
>> reporter: when diana nyad finally responded to the skep ticks who question ed the validity of her 110-mile swim from cuba to key west she was firm and to the point saying she did not cheat.
>> never did i grab hold of a boat. never did i exit the water to sit on the edge of a boat.
>> reporter: at the age of 64 diana nyad got into the water in havana, cuba , and swam through jellyfish and shark-infested waters for days. she was fed through a tube. after 53 hours she went ashore.
>> never, ever give up. [ cheers ]
>> reporter: a small group of skeptics raised questions about the swim. why she made such good time. might she have had help? for three and a half hours nyad and the team held a video conference call offering proof to other swimming experts that nyad 's triumph was by the book. at times she seemed frustrated by the questions.
>> we have been assaulted from every e different direction.
>> i don't think she should let it bother her. blow it off.
>> when people succeed and do something great people try to knock it down.
>> reporter: nyad 's navigator is releasing trip logs that explain why she was pushed so quickly by favorable currents.
>> the current at one point ran as fast as 3.5 or 3.6 knots which is close to 4 miles per hour.
>> reporter: having answered credit uhhics nyad hopes the questions will fade so she can once again celebrate her history-making swim. mark potter , nbc news, miami.