There are many different kinds of emergencies. And no family will experience all. Yet I have known individuals whose homes have burned to the ground. I have known individuals who have been lost in the woods. Etc., etc. I'm sure you know individuals who have had a variety of setbacks or sudden emergencies.
Since we don't know what we might encounter in this life, preparing calmly will help bring peace if and when a tough situation sets in.
One of the fun things a family can do is to practice drawings maps of their house. Do this for a family night and make it fun. Let the kids practice their map making skills and then color and decorate their maps. Display them on the fridge, etc.
But behind the fun, there is a theory. That which we draw out will stay in our mind, even when under great duress.
You might be surprised how stress can stymie a mind. For example, a woman who worked for the Red Cross for 17 years teaching emergency preparedness forgot the number 911 when she discovered her own home was on fire. She'd taught this number for 17 years!
Thus, if your family woke up in the middle of the night to a raging house fire, it might not be surprising to find a family member stymied by the fear and completely forgetting where the exits are to the home. But picturing in their MIND the map they'd drawn previously in a fun activity potentially could help see them through to safety.
Tip: For this week's family night together, draw maps of the home with safe escapes (at least two different ones).