up next, new video of police rushing a campus that could have become a vast killing ground. and we'll talk to the would be killer's roommate. he talks about how the first real eye to eye contact he made with his roommate may have been his last on earth. his roommate had a rifle staring right at him. that's the potential gunman who ended up killing himself. >> reporter: later spring may be coming. winter is not going. we'll show you who's getting hit h and why there could be more to come. we'll be right back. [ kitt ] you know what's impressive?