that, to me, makes it -- >> it could be anywhere. anybody could get hurt at any time. >> colin goddard was shot four times in that virginia tech classroom and now works at the brady center to prevent gun violence. welcome, colin. thank you for your case. you went undercover to buy guns. what did you learn? >> i learned it was pretty damned easy, chris. i learned, as long as you got the money, they'll sell you a gun. and you go a private seller, they're not going to ask you for i.d. or any paperwork or any background check, they're just going to be concerned with the 500 bucks they can make and that's about it. >> you mean, if you come in drunk or loony tuoons, they'll still sell you the gun? somebody comes in and looks a little dangerous, you think it's just arizos easy? >> some people might take the personal responsibility not to do, but unfortunately, other people won't. most of the guys that are selling guns at these gun shows are doing legit business, but