josephine
What is the 21 foot rule?
It's a rule originating from research by Salt Lake City trainer, Dennis Tueller "rule" states that in the time it takes the average officer to recognize a threat, draw his sidearm and fire 2 rounds at center mass, an average subject charging at the officer with a knife or other cutting or stabbing weapon can cover a distance of 21 feet.
http://answers.yahoo.com/question/index?qid=20100601052624AA49VTS

Liberals are like a "Slinky". Totally useless, but somehow ya can't help but smile when you see one tumble down a flight of stairs!