. >> reporter: but ten days after the team went missing, john and fellow rescuer rick stanton discoveredhow many of you? >> 15. >> you're a father yourself. what was that moment like for you? >> finding the boys was, for me, an unbelievable moment. there's a part in the audio where i'm saying, believe. believe. i was talking to myself. i wasn't particularly talking to the boys. and yet, suddenly, the situation changes completely. and now, we're responsible for a dozen children. >> reporter: defying all expectations, every single team member was brought out alive over three days. the pain staking process revealed in the new documentary, "the rescue." >> i told him it was a horrible idea. rick said, what if the it's the only idea? >> what did you feel like you could show that the rest of the world hadn't already seen? >> there was no footage from inside the cave, very little known footage. >> i couldn't get him breathing again with the mask on. >> people didn't have a sense of the moral dilemma that they were faced with. and the kind of impossible decisions that they had to make. >> report