VIRGINIA TECH SHOOTING

A young woman visits a memorial in front of Norris Hall, on the campus of Virginia Tech in Blacksburg, Virginia on April 22, 2007. Cho Seung-Hui, a student at Virginia Tech, went on a shooting spree and murdered 32 people on April 16, 2007, the deadliest school shooting in U.S. history. (UPI Photo/Kevin Dietsch)