One of the people who attended the news conference by school officials Saturday afternoon is advocating a change in policy at USA and other schools to allow students to carry concealed weapons on campus.Phillip Harding had something on his belt other students didn't have at the news conference Saturday: an empty gun holster.Harding said, "An empty holster is kind of a symbolism that, while I'm trained, I have a permit, I can be armed. I'm not allowed to be armed here."

More...