Up next on a second look, Mass Shootings in the united states. Over the past quarter century. What do so many have in common. High capacity magazine rifles. Thats our story on a second look. Today we revisit the question of high capacity magazine use. In a number of Mass Shootings the gunmen followed high capacity magazines. At newtown connecticut, adam lanza had several magazines holding 30 round a piece. At aurora colorado, james holmes used a drum holding 100 rounds and shot 72 people in a movie theater, 12 of them died. In tucson arizona, Jared Laughner used a high capacity magazine. A gunman with an ak47 rifle opened fire at a schoolyard in stockton. Here are our reports at the time from Randy Shandobil and lloyd lacuesta. It was lunchtime. First second and third graders out in the schoolyard eating, jumping rope, playing ball. No warning whatever. Just, pow, pow, pow, pow. Did the man say anything or was he just shooting . Just shooting. Not a word from him, just shooting. What d