democrats have used the shooting as another example to push for gun control. gardner's husband doesn't blame the gun. here's what he told fox news. >> if he hadn't had a gun he'd have had a knife or machete. he was bound and determined to try to make a name for himself on live tv because he failed at it so many times. so no, i don't blame the gun. i blame the guy that was holding the gun. >> and the father of alison parker addressed reporters today. he says he's going to fight to tighten gun laws but insists the effort isn't going to take away the second amendment rights. >> we're not trying to take people's guns away. all we want to do is keep crazy people from getting guns. and there's got to be a way to do it. >> we go to you, katy, first. you wrote books on guns. your thoughts on both these gentlemen. >> the good news is that there are ways to prevent mentally ill people from getting guns. virginia is one of those places