Border Patrol agent killing

Associated Press
Family members of Border Patrol Agent Nicholas Ivie participate in Thursday Oct. 4, 2012 candlelight ceremony in Naco, Arizona. Nearly 100 people gathered in Naco for a candlelight vigil for a fallen Border Patrol agent. Ivie and two other border agents were fired upon Tuesday in a rugged hilly area about five miles (eight kilometers) north of the border near Bisbee, Ariz., as they responded to an alarm that was triggered on one of the sensors that the government has installed along the border.  (AP Photo/Beatrice Richardson, Sierra Vista Herald)

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The head of the U.S. Border Patrol agents' union says the agent killed last week in a shooting in southern Arizona apparently opened fire on two colleagues thinking they were armed smugglers and was killed when they returned fire. (Oct. 8)

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