Mylar emergency blankets can also be used to keep rain and snow off a victim, and off the people caring for him. I passed an accident once where it looked like a couple of civilians were stretching an emergency blanket over the victim and the paramedics caring for him (or her) in the rain.

It may not be a necessity, but it certainly could be a kindness. In bad weather, I'll be those paramedics run from one accident to the next, without taking time to change to dry clothes.

Sue