Thanks for the great info guys.
I agree that rapid extrication in -37C + is the way to go, but it's not always possible. The eastern part of ND is very flat and we can experience 8 months of winters/cold months. The windchill factor is always something we have to take into consideration as the open areas have no protection. Being rural doesn't help either, it can take us 15 to 20 minutes to get to some areas, so that person has already had plenty of exposure. I just think this would be a great tool to have on our team when needed.