once again, joan jett and the blackhearts!e past ♪ it's a new generation >>> tonight on "nightline" -- saving daniel. he was only 12 years old when we first met him, a kid facing a heartbreaking diagnosis with impossible odds. but backed by a remarkable team at st. jude's children's hospital in memphis, cutting-edge medicine, and tender care, he faced the odds head on. tonight the incredible journey of the miracle survivor, who captured our hearts. and the medical pioneers who wouldn't take no for an answer. as we make good on the promise we made five years ago. >>> and fifth time's the charm. it was for diana nyad. the 64-year-old phenomenon who finally made her triumphant swim from cuba to florida. >> announcer: keep it right here, america. >>> good evening. it's a moment that's impossible to imagine unless you or a loved one have experienced it. a diagnosis of cancer. in daniel biljanoski's case an aggressive brain cancer untreatable at most hospitals. the prognosis is dreary. perhaps a year to live. but for daniel and his