If an enemy is within 21 feet with any weapon—a knife, a gun, a bottle, or a rock—and they get to make the first move while you wait to respond, you are in a fight for your life.

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If an enemy is within 21 feet with any weapon—a knife, a gun, a bottle, or a rock—and they get to make the first move while you wait to respond, you are in a fight for your life.
What am I learning about here ?? During my first Glock Armorers course (2006?), taught by Lt. Dennis Tueller. (Salt Lake City PD, Ret.) author of the 21 foot rule #21footRule #DennisTueller #GlockArmorer #GlockLife