a security guard at arapahoe high school in colorado says the school did not do enough to prevent a shooting. this was back in december. you remember this one? in a post on facebook, cameron rust claims the alleged shooter carl pearson called teacher, looked up guns on the internet while on campus. >> one afternoon in the lunchroom, carl was looking up guns on his computer. after we noticed that, he quickly closed his computer. and we immediately told our supervisor what we saw. and we were told he would bring it up in their administration meeting. and then that following monday after that administration meeting, we were told there was nothing that they could do about that. and it was his personal computer, and that he could look up what he wanted. >> well, during that attack,