According to NRA publication Shooting Illustrated, the Tueller Drill evolved into a " 21-foot rule," which is the idea that an attacker can close a distance of 21 feet within 1.5 seconds, and that therefore 1.5 …

Dec 6, 2021 · Prosecutors, including in Utah, point to it when deciding if a police shooting was legal. It’s called the “21-foot rule,” and it means that someone with a knife running toward police, could...

Aug 16, 2025 · The “21-foot rule” is a widely discussed concept in self-defense and law enforcement circles. It suggests that an attacker armed with a knife can cover a distance of 21 feet and potentially …

Sep 16, 2023 · The 21-foot rule is an often talked about concept in self-defense circles. It plays a crucial role in determining when one can use force to protect oneself or others.

There are several anecdotal publications looking at the 21-foot rule as a standard in policing. This study uses experimental design to examine whether this standard should continue in modern-day policing. …

Jul 17, 2025 · The "21-foot rule" is a principle in law enforcement training that suggests a suspect armed with a knife can cover 21 feet in the time it takes an officer to recognize the threat, draw their …

Sep 5, 2025 · Officers make decisions in seconds. Distance and timing shape those choices. The 21-foot rule helps trainers explain why space buys time, and why time unlocks safer options. This guide …

Sep 18, 2014 · The 21-foot rule was developed by Lt. John Tueller, a firearms instructor with the Salt Lake City Police Department. Back in 1983, Tueller set up a drill where he placed a "suspect" armed …

Mar 20, 2020 · Most people in the defensive-shooting world have heard of the "21-Foot Rule," often practiced as the Tueller Drill. But what ramifications does this have for the armed citizen?

Sep 24, 2024 · The 21 Foot Rule is a concept from the field of self-defense that suggests an average person can cover a distance of 21 feet in the time it takes a trained individual to draw a firearm and …