Oxygen levels down. CO2 up. Heavy rain overnight, and more on way. So rescue under way. Boys will travel tied to diver's backs, and be hooked to diver's oxygen tanks. Reportedly none of the boys can swim.
Rescuers couldn't find shaft to caves from above. Not enough time.
The third phase of the high-risk rescue operation for the boys and their coach trapped in a cave in Thailand played out quickly on Tuesday. Hours after Thai officials confirmed that 19 divers had entered the cave complex in Chiang Rai province to extract the remaining four children and their assistant coach, several of them were brought out on stretchers.
Four boys were rescued Sunday and an additional four emerged on Monday.
The boys, ages 11-16, and their 25-year-old assistant coach became stranded when they went exploring inside after a practice game. Monsoon flooding blocked their escape and prevented rescuers from finding them for almost 10 days.
Watch: Long-term effects for trapped kids Read: Thai Navy SEAL team posts touching photo Read: Illinois restaurant owner joins Thai cave rescue effort
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