what happened? monsoon season, a collapse and flood in the cave. what do they have to do to get out? how far do they swim to get out in what conditions? >> it's a question of teaching them how to dive, go down and come out. i don't dive myself, but, you know, it takes weeks and weeks to be a proficient diver and especially in water where you can't see. they're going to have to go deep. i don't think it's going to take four months, but if they are planning for that, that's a serious situation. >> what happens if that's plan a and it does not work? >> you know, i think, chris, it's going to work. we should be optimistic. it's like bringing people out of a sunken submarine. the u.s. navy has done this for years. they are good at it. they'll bring in experts. like i said, decompression chambers, dive suits issue and the rest of it. they're going to have to get to know their way into the cave before they are prepared to do