reporter: the officer spots two boys near the mouth of the tunnel. don t let go. all the way up here. reporter: with help from the fire department, he manages to get both out on their feet. you re the last one, right? no. reporter: there are three more boys still stuck inside. there s no way of knowing how far down there they are. reporter: what do you know about that tunnel? what s it like in there? well, i know it s pitch black and, obviously, just looking at it, i can see that the water s rushing. i knew that that tunnel continued down for approximately a mile and subsequently let out at the river. i m just going to use this to get down with, okay? reporter: with franklin holding on to him, the fire chief goes down to search. once he gets down there, he s out of my sight. reporter: soon, rescuers feel the weight of one boy on the line. take a deep breath, man. take a deep breath. come on up. reporter: finally they feel the weight of another. almost ther
tunnel. with help from the fire department he manages to get both out on their feet. you re the last one, right? there are three more boys stuck instead. there s no way of knowing how far down they are. reporter: what do you know about that tunnel? what s it like in there? well, i know it s pitch-black and obviously just looking at it i can see the water is rushing. i knew that tunnel continued down for approximately a mile and subsequently let out at the river. reporter: with franklin holding onto him the fire chief goes down to search. once he gets down there, he out of my sight. reporter: soon rescuers feel the weight of one pull-on the line. finally, they feel the weight of another. almost there. there s 5, 6 grown men tugging, pulling as hard as they can, pulling 120-pound teen, and it felt like we were pulling a