It took 15 years of school shootings including Columbine, Va Tech, and many others, and STILL most states do not realize that the so-called 'gun-free zone' is a recipe for disaster! Any nutjob looking to go out in a "blaze of glory" just needs to find the nearest 'gun-free zone' to be assured that nobody will be able to respond soon enough to stop him.
At least Colorado has done something right. Maybe next year we can get it done in TN as well.