It seems apparent that "seslew" has no real understanding of the reality of modern law enforcement. Unless you have undergone law enforcement training (i.e. police academy, citizens academy, etc.), you are not in a position to speak authoritatively on what police procedure should or should not be relative to dealing with someone armed with a knife. Knives are a deadly weapon, even in the hands of "untrained" users. Tactical training studies have proven that when a knife-wielding person is 21 feet away from an armed officer only 20% of the officers involved in the drill could pull their firearm and hit the knife-wielding person as they ran at the officer. Even military training confirms this reality that a knife-wielding person can close a gap of 21 feet in a matter of seconds, filleting their target and slicing major arteries. Reality is that most people don't die from gunshot wounds. However, a person that knows how to handle a knife can slice arteries and cause their target to bleed to death quickly.

You forget that officers have families - spouses, kids, etc. - to go home to at the end of their day. I really doubt the anti-shooting people would comment with such passion if an officer died due to being stabbed by a suspect because he thought once the suspect heard him say "Drop the knife!" for the 843rd time it would be the magical number, causing the suspect to experience an epiphany, drop the knife, and apologize profusely for his inconsiderate behavior. Wake up folks, reality isn't as cute, orderly, and understandable as you wish it was!