Virginia Tech Tragedy (34 images)

A Virginia Tech Cadet pays his respects during a candle light vigil in memory of the 32 students and staff who died the day before in two shooting incidents on campus in Blacksburg, Virginia, on April 17, 2007. The shooting is the deadliest on a school campus in U.S. history. (UPI Photo/Roger L. Wollenberg)

Deborah Wiley-Vawter, manager of the campus bio-sciences greenhouses, brings flowers on April 17, 2007 to Norris Hall (background) at Virginia Tech where 33 people died on April 16, 2007, in two shooting incidents in Blacksburg, Virginia. She had planned to deliver the snapdragons to a biology lab class yesterday but was unable to do so. (UPI Photo/Roger L. Wollenberg)

State police continue to work the crime scene at Norris Hall at Virginia Tech where 33 people died on April 16 in two shooting incidents on campus in Blacksburg, Virginia, on April 17, 2007. Gunman Cho Seung-Hui, 23, a senior in the English department, committed the deadliest shooting on a school campus in U.S. history. (UPI Photo/Roger L. Wollenberg)

Windows on the second floor of Norris Hall at Virginia Tech remain open where 33 people died on April 16 in two shooting incidents on campus in Blacksburg, Virginia, on April 17, 2007. The Norris Hall victims were found in four different classrooms, and some opened and jumped from the second-story windows to escape the gunfire. Gunman Cho Seung-Hui, 23, a senior in the English department, committed the deadliest shooting on a school campus in U.S. history. (UPI Photo/Roger L. Wollenberg)