On Mon, 15 Apr 2013 08:19:41 -0400, "Mike Marlow"
Scant little knowledge necessary to build a bomb. Common materials,
instructions easily found on the internet.

But, it doesn't happen that way does it? Guns are by far the tool of
choice when some nut job goes off the deep end and goes on a killing
rampage.

I can't remember *ever* hearing of someone rampaging around with a
bomb. Sure there have been bombings, but it's usually someone who
plants it and then isn't there when it goes off.

That's a completely different scenario than someone walking through a
building shooting people.