He also stresses to have the following ready in your car: Shelter, water, fire, food.
Shelter, fire and water are fare more important for short-term survival than food.
Two way radios and a whistle are great communication options in the wilderness. Cell phones may not work in wilderness area as there may be no cell phone towers.
He mentioned the “Rule of 3’s: .... air, water, food. Here’s the one I live by: 3 hours without shelter, 3 days without water, 3 weeks without food. Good friend of mine is with SAR .... when I asked her from her experience what most folks die from, her answer was ‘exposure/injuries’. Hypothermia kills in a hurry ..... I’ve had to deal with it before, personally & with other folks so I know how it works and it’s not something you want to have to face, if at all possible.