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Email threat causes nation's second-largest school district shut down
A police officer puts up yellow tape to close the school outside of Edward Roybal High School in Los Angeles, on Tuesday morning, Dec. 15, 2015. All schools in the vast Los Angeles Unified School District, the nation's second largest, have been ordered closed due to an electronic threat Tuesday. (Associated Press)
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Olympic security concerns remain high
In this photo provided by Olympictorch2014.com, performers dressed in folk costumes dance during a welcome ceremony of the Olympic torch relay in Rostov-on-Don, south of Moscow, Russia. The 65,000-kilometer (40,389 mile) Sochi torch relay, which started on Oct. 7, is the longest in Olympic history. The torch has traveled to the North Pole on a Russian nuclear-powered icebreaker and has even been flown into space. (AP Photo/Olympictorch2014.com)
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