I love that phrase, "random acts by unbalanced, crazy people".

Teach, at first glance your post seems mathematically sound, but it fails to take into account the relative value of human life. You see, the big shots in Washington figure a single killing of one of you FF's is exponentially worse than multiple driveby's. I'm not sure of the current exponent factor, as it's a closely held secret in the name of national security. I think the Heritage Foundation actually came up with the original equation, but it was Paul Wolfowitz who really got some momentum behind the idea before he started working on that pesky Iraq situation.