more. brian, great to see. what more can you tell us about how treacherous this rescue operation is? >> hi mike, good to see you. talk about a massive rescue mission involving 90 divers thai and others from around the world. four boys were rescued, faster than expected. they would loan offer portions of the cave to be walkable. in order to rescue the remaining eight boys and the soccer coach, divers are navigating 2 and a half miles of treacherous dark caves. which of march are underwater. divers are equipping the boys with full face diving masks, two divers are comforting each boy to guide them through the dark using ropes, some of the boys have never even swam before. but they receive guidance and training in the days before the operation pay there are 100 oxygen tanks that have been placed throughout the two and half mile journey. to the divers and children do not run out of oxygen. one former u.s. navy s.e.a.l. said this morning, the difficulty, he talked about how