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A man is very much under the influence of some hard drug, that causes him to attack this sheriff's deputy. The LEO, rightfully so, begins to discharge his pistol at the aggressive man striking him several times in the chest. The man doesn't fall right away, he takes several shots, takes several steps forward, and still continues to act aggressively. If this man had a knife or a firearm, the LEO would definitely have had a serious issue. Pistol ammunition isn't very effective at immediately stopping people unless the shooter aims at a very specific switch and hits it. This is very much proof positive of this.
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