Quick!  Where is the closest exit right now? 

If there was someone between you and that exit, and you needed out, what would your plan be?

In school we all have fire drills to learn how to escape danger in the event of one particular emergency.  In some states, there are tornado drills.  Have you ever had a fire drill at home?  Most people have not, but it only makes sense. 

Emotions can run amok in a stressful situation.  Those can be useful if you have practiced using them.

Many people think only of anger as a useful emotion in a violent encounter.  The truth is that anger, fear, hope, and love are all useful and should be there.