Please identify what type of evidence is used:The scene was entirely out of control. I was standing only ten feet away from the President, who was walking through the crowds on the sidewalk of Jefferson Ave., when the incident occurred. Before I knew what was happening, a tall man, wearing a ski mask and a dark leather jacket, ran up beside the President, took out what seemed to be an Uzi, and fired three rounds into his skull. Immediately all hell broke loose; people were scurrying everywhere, looking for shelter.