program last night says the evidence shows that 30-year-old james olver had enough ammunition for in his words a massacre. i don t think that you acquire 210-round magazines and numerous 22 capacity magazines and that you purchase 1,000 rounds of ammunition and the 45 ammunition i don t think you just do that as a joke. fortunately, his roommate called 911 and may have presented mass casupresent prevented mass casualties on the campus. ed lavandera is there with the latest. what is the latest trying to get information on the motive and what might have happened here, ed. reporter: well, authorities here at the university of central florida have released all sorts of different types of information and most importantly, the 911 call and the video that you just caught a glimpse of there early on.