““In, say, the year 1950, only firefighters seemed wise enough to have fire extinguishers in their homes. If you went to the family physician and asked him to teach you closed chest cardiac massage, as cardiopulmonary resuscitation was called then, he would have looked at you as if you were nuts and told you to go to medical school if you wanted to learn that stuff. And if you had asked your local police chief about deadly force against criminals, he might have told you to go to the police academy and become a cop, because that was their province. Today, things have changed.””