USAF Arctic Survival School

We had someone recently recused off Mt. Washington, NH who was alone in sub-zero temps for 12 hours before someone found her. In the summer 12 hours doesn't seem like a long time but in the winter it's an eternity. Thankfully she kept her mind sound which was probably the main factor which decided her fate.

I'm curious what people who've gone thorough cold weather training think and what they learned from their experiences.