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April 2, 2014: Spc. Ivan Lopez killed three people and wounded 16 others at the Fort Hood military post in Texas before fatally shooting himself, authorities say.
A gunman opened fire at the Fort Hood military post in Texas on Wednesday, killing three people and wounding 16 before committing suicide. Take a look at some of the worst mass shootings in U.S. history.
U.S. Sen. Brian Schatz is working with state and local officials on Hawaii's Big Island to form a hazard mitigation plan for albizia trees on Hawaii's Big Island.
[Breaking news update 6:44 p.m. ET]
The United States attempted a rescue operation earlier this summer to free a number of American hostages held in Syria by ISIS, Pentagon spokesman Rear Adm. John Kirby said in a written statement.