More we find out about this the more amazing this becomes. Apparently the Pumps failed just as the last of the soccer team was extracted from cave. This left the Doc and Thai Navy Seals and some workers removing equipment to scramble out for their lives from fast rising waters.
It also sounds like none of the boys swam or dived on own. The were fastened to stretchers and towed under and above water and carried through mud by divers till reaching the staging area. The boys appear to have been sedated with anti anxiety meds and possibly asleep along way.
A retired US Navy rescue diver on radio today said this easy goes down as the recue of all rescues. Its just miraculous they got any out much less all.