is the problem of self-defense in this country. he doesn't have an obligation to die and just sit there. people go why didn't he pull a gun, he had it in his pocket? bob, you're not a forensic pathologist, are you? >> i teach people forensic path on ology. >> more from the zimmerman trial ahead, but first, nearly four years after the terror attack, the long-awaited ft. hood murder trial began today in texas. we're going to bring you p to speed. and later, if you love george clooney, don't go anywhere. big news from one of hollywood's biggest stars, "the five" returns in a moment.