Still an ABC Update (by Matt Guttman)
What the divers have had to navigate at every foray into the cave:
Reduced visibility inside the dark cave and under murky water.
A water current so strong it has ripped the masks right off the divers faces.
Narrow passages, some as tight as 15 inches. Walls as sharp as broken glass. They have to scoot on their butt or crawl through passages and under water.
The divers have often have to haul the boys through the tunnels, which is exhausting, while also wearing 30-60 lbs of scuba gear. (That also doesn't include their 6 hour journey into the end of the cave to the boys.)
One of the reasons they can't bring all the boys out at once is they are actually a huge support team of about 100 divers. They ALL go through the stockpiled oxygen in one day & then it has to be restocked in the cave for them the next day. The support team works as a long human relay from the end of the cave to the opening for the two rescue divers with the boys.
And it is so arduous getting each boy out, the divers need a rest.
(The Thai official said the first day that there are only 5 Thai rescue SEAL divers. (not the support team.) The other 13 rescue Seal divers are a team of international divers.) I think a Thai diver HAS to go with each boy as he may be the only one who speaks Thai. Plus, if something does happen to a boy, the Thai government probably wants to make sure one of their own divers was with him.