The latest shootout killed 12
2009
November 5: The Army says 12 people were killed and 31 wounded in a shooting rampage at its Fort Hood base in Texas. Army officials initially said the suspected gunman was among the dead, but later said he survived and was hospitalised.
April 3: A 41-year-old man opened fire at an immigrant community center in Binghamton, New York, killing 11 immigrants and two workers. Jiverly Wong, a Vietnamese immigrant and a former student at the center, killed himself as police rushed to the scene.
March 10: Michael McLendon, 28, killed 10 people, including his mother, four other relatives and the wife and child of a local sheriff's deputy, across two rural Alabama counties. He then committed suicide.
2008
February 14: Former student Steven Kazmierczak, 27, opened fire in a lecture hall at Northern Illinois University in DeKalb, fatally shooting five students and wounding 18 others before committing suicide.
2007
December 5: 19-year-old Robert A. Hawkins opened fire with a rifle in Omaha, Neb., at a Von Maur store in the Westroads Mall, killing eight people before taking his own life. Five more people were wounded, two critically.
April 16: Cho Seung-Hui, 23, fatally shot 32 people in a dorm and a classroom at Virginia Tech in Blacksburg, then killed himself in the deadliest mass shooting in modern US history.
February 12: 18-year-old Sulejman Talovic killed five and wounded four at the Trolley Square mall in Salt Lake City, Utah. He was then shot and killed by police.
2006
October 2: Charles Carl Roberts IV, 32, shot to death five girls at West Nickel Mines Amish School in Pennsylvania, then killed himself.
2005
March 21: 16-year-old student Jeffrey Weise killed nine people, including his grandfather and his grandfather's companion at home, and then five fellow students, a teacher and a security guard at Red Lake High School in Red Lake, Minnesota, before killing himself. Seven students were wounded.
March 12: Terry Ratzmann, 44, gunned down members of his congregation as they worshipped at the Brookfield Sheraton in Brookfield, Wisconsin, slaying seven and wounding four before killing himself.