Transcript for Operation to extract boys trapped in Thai cave could begin soon

They're breaking news out of Thailand ABC news has learned that authorities on the ground. They may start attempting to bring those twelve boys and their soccer coach out of that came as soon as tonight because of rain is coming and we just want to give you sense of how risky and how arduous this mission is going to be take a look at the map the boys are nearly. We miles inside that cave a one way trip takes six hours. For a professional diver and the boys don't even know how to swim now ahead of this high stakes escape we are hearing this morning directly from the boys and their coat also. Released personal letters as you can see to their families the college profusely apologizing. For leading the boys into that cave. He is indeed and we begin our coverage this morning with ABC's Matt Gutman right Darren Chang right Matt good morning to you. Hey good morning again if all of this rescue has tumbled from one crisis to the next now it's still possible that they. Could extract those boys sometime very soon but. Just now we heard from head of operations here at this base camp who say that the oxygen levels in that cave are dipping. Dangerously low so what they've done is start to pull back a lot of the rescuers to minimize a number of people inside what they've got to do. It's pump up the level of oxygen in there and fight what they are calling the war on water. The mission to extract the boys could begin within 24 hours according to an internal US government report. Obtained by ABC news if they swim out each of the though emaciated boys could be shepherded out in what's called treatment Buddy Guy. Essentially hold bike divers through tunnels up until we want is a manhole cover. These types who think that and that that this had it. We can beat you know. And that these youth medium maybe be right. Over the past several days divers at rescuers have amassed hundreds of air tanks along the route British divers had been teaching the voice how to dive. And some of the basics of swimming authorities have drilled over a hundred holes into the mountains. Sold to fund an alternate route out for the boy's aunt to create the second outflow of water in net three mile long Kate. At this morning for the first time letters emerging from three miles deep the boys writing home. Letters carried out by divers the boys ask for fried chicken and barbecued pork others asked that we not get too much homework when they get out. Thirteen year old dom wrote I'm fine but it's a little bit cold don't worry don't forget my birthday. Some said they want to go home now and heartbreaking leak fourteen year old pew. School we've visited just last week said mom and dad don't worry that a missing for two weeks hope you at the shops soon. Their coach also right sending love to his family and apologies to the families of the voice writing. And a promise I will take care of the kids thank you for your support. Like to see that I'm really sorry to you wall to this here is a practice field. That the team used to play on in fact it's the place they set out from. To go to that cave now it's a landing pad. Rescue helicopters and it was in that field overnight that we met the team's head coach who told us was never informed that he's assisting. Notice coach Jay man had ever in the chaos that. Looks at Clinton and he. Head coach told me that he didn't know that he's assistant went inside that cave with the kids. I'm being told an expert rescue divers are converging here for that final push from all over the world it. Just minutes ago get a Paul I spoke to the tourism minister here who said the key. He himself. They tested out a thirty meter long hundred foot long inflatable tube through which the boys. Could crawl out without actually having to swim or learn how to dive of course that's only thirty meters. And that is very similar to what Elon Musk. Has floated an idea just like if he is sending two of his technicians over here to try to figure out maybe alternate ways of rescuing those boys and if Paula. So many people getting involved in this rescue effort that is one encouraging part here Matt thank you very much Matt Gutman Chang writes a let's bring in navy seal and former deputy of US Central Command. ABC news contributor ever admiral Robert Har word he's joining us from San Diego admiral good morning. So this this proposed rescue involves what they're calling a bloody dive how does that work. Avenge the guy who's going to be with them supporting we'll have hands on them and they'll be going to go there. So have a swim by the U a guy whose. Focused on keeping him safe for the turn in there may be multiple. There may be handoff along the lines that you can guarantee someone will have their hands on those boards ever step of the way coming out the case. That is reassuring to hear Cindy boy aged boys are ages eleven to sixteen some of them admiral can't swim so how does that change the extraction plan. That that's not really role that. With but as well Buddy Guy who's got his hands they made to give them flotation of arts but once you're in the water the Bourne had three. Did social embody a guy who's so experienced diver with hands on them. To help navigate and keep them float. And make sure makes it safely outside of the case of they'll be hands on the whole way admiral thank you for joining us this morning appreciate it.

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