Major US school shootings

--- Dec 14, 2012: Newtown, CT -- Sandy Hook Elementary School --- 26 are killed by a 20-year-old gunman - 6 adults, 20 children [reports as of 12/14]

--- Feb. 14, 2008: A man fired into a lecture hall packed with students at Northern Illinois University, killing five people and wounding 18 before shooting himself dead.

--- April 16, 2007: VA Tech, Blacksburg, VA - A student killed 32 students and faculty at Virginia Polytechnic and State University in the worst single act of gun violence in U.S. history.

--- October 2, 2006: A local milk truck driver who was not Amish, tied up and shot 10 Amish schoolgirls aged 6 to 14 in their classroom, killing five of them before turning the gun on himself in Lancaster County, Pennsylvania, about 60 miles west of Philadelphia.

--- March 21, 2005: A 16-year-old high school student gunned down five students, a teacher and a security guard at Red Lake High School in far northern Minnesota before killing himself. He also killed his grandfather and his grandfather's companion elsewhere on the Chippewa Indian reservation.

--- April 20, 1999: Littleton, CO -- Two students killed 12 students and a teacher and wounded more than 20 others before killing themselves at Columbine High School.

--- August 1, 1966: Austin, TX -- A University of Texas student killed 16 people and wounded 32 others in and around the campus