You may also have heard this drill or demonstration referred to as the “21 foot rule” based on the typical distance covered. The “Rule” implying that at greater distances you are safe – lessor, you are in danger. You might also have heard it described as a distance at which someone who has a knife may be shot should they move to attack you. There is more to it than Continue reading “The Delay in Reacting: The Tueller Drill” →