Columbine, Virginia Tech, Aurora -- and now, Newtown. Today's events in Connecticut mark yet another moment in this nation marred by horrible gun violence. But this time, it was targeted at the most innocent and helpless among us -- children. Correspondent Vince Gonzales retells his experience covering the Columbine massacre and talks about what the community of Newton can expect in the next couple of days. Psychologist Dr. Catherine Mogil has advice on how to approach issues such as this with children.