Here is a glance at some of the worst U.S. mass shootings in recent years:
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Nov. 5, 2009: The Army says 13 people were killed and 30 wounded in a shooting rampage at its Fort Hood base in Texas. The suspect in the shootings, Maj. Nidal Malik Hasan, was wounded and is hospitalized.
April 3, 2009: A 41-year-old man opened fire at an immigrant community center in Binghamton, N.Y., 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, 2009: 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.
Feb. 14, 2008: 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.
Dec. 5, 2007: 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, 2007: 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 U.S. history.
Feb. 12, 2007: 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.
Oct. 2, 2006: Charles Carl Roberts IV, 32, shot to death five girls at West Nickel Mines Amish School in Pennsylvania, then killed himself.
















































