>> okay. >> the swim starts here. she's going to jump in. >> now, inside an extraordinary journey. >> it seems almost like a dream to me, but it's real. >> from the first strokes to the dramatic finish. five attempts, four failures, one extreme dream. monday, september 2nd, 2013. diana nyad is swimming through her second full night. >> i'll admit to you, my confidence is cracking, because i don't know if i can do two more 13-hour stints. my stomach, i couldn't find anything to eat. from eggs to chocolate, to goo. the second it would go in -- >> you were throwing up in the water? >> just constantly violently vomiting. and trying again, but going