The Associated Press: Friends say Omaha school gunman was fun, outgoing

The Associated Press: Friends say Omaha school gunman was fun, outgoing: "OMAHA, Neb. (AP) — An angry online posting from the 17-year-old boy who opened fire at a Nebraska high school, fatally wounding an assistant principal before later killing himself, offers some clues about why the son of a police detective turned violent a couple of months after transferring there."