hospitals. for many, it was all over before they could figure out what had happened. the wounds were gruesome, a piece of a blade broke off in one victim's cheek. others stabbed in the throat and face. as students ran from the chaos, a group of three students went after the attacker. one of them was steven mada. >> the next thing a guy stabbing girls in the face. all right, got to go in there, see what i can do. >> reporter: maida and two other students started chasing dylan quick in the building and caught up with him outside by a parking lot. >> i jumped back on him, and i didn't want to take a chance, put him on his stomach, put his hands behind his back and that's when the cop came and put the cuffs on him. >> reporter: when you got on top of him, what did you say? >> right away, give up, give up. i was like why did you do this? >> reporter: maida said he didn't get an answer. but investigators say dylan quick says he has had fantasies