The "most able" part is a rub. There are very few times when I'm "most able". That would require full time packing, and I, for one, am not willing to live my life that way. I'll pack when I feel most vulnerable, but other than that, I'm pretty much at life's mercy. That is not an excuse to do nothing, however......even at the cost of one's life. The principal at the Conn. incident, for example. He gave his best effort, and that is the quickest way to stop the killing. I have few heroes....he, however, was one.