A world gone mad

What is going on in the world? First, that guy at Virginia Tech, and now this. I have two questions (okay, maybe more):
a) Is all this still not enough of a case for tighter gun control in this country?
b) Has NASA's psychological screening process completely fallen apart?

I'll start with the first one. If Charlton Heston and his friends were really in favor of responsible gun ownership, wouldn't they welcome tighter regulation on who can buy what type of gun? Wouldn't they want to make sure that there were fewer incidents like these that turn people against all gun ownership even though there are plenty of perfectly responsible sport-shooting fans out there?

My own husband owns a gun and wants to teach our (future) children to target shoot like his dad taught him. But learning to shoot at a range comes with learning about being responsible and locking guns up and never, ever pointing a loaded weapon at anything you don't intend to shoot and never firing a gun in anger.

On to the second one. NASA has a pretty thorough psychological and security screening process for its employees. I work at a major company and I know how tight our security is and how hard it is for a non-employee to even get into the parking lot, let alone the building. I highly doubt our nation's space agency is less secure than the research facility of a major consumer products manufacturer. That leaves the only possibility as that this was yet another NASA employee snapping (recall the diaper wearing, stalking astronaut...).

I think I need to go look up the signs of the apocalypse now...