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There're decisions they took that I'd hope I wouldn't. I'd not set off in those conditions for starters. I think they handled things relatively well once they found him although I'd question his decision to go find help from the path alone once MRT were called. Another slip and the situation escalates massively then. That said, finding the nurse then the other walkers for more kit/shelter may well have saved the guys life.
Interesting reminder that things can go wrong v.quick out there:
https://youtu.be/CRf7CnhOzXY
Spoiler: he survives