9 of 14: San Diego police officers carrying assault weapons cross over Harbor Drive in San Diego during a manhunt for former Los Angeles officer Christopher Dorner who police believe is responsible for three murders on Thursday, Feb. 7, 2013. Dorner is suspected of shooting two LAPD officers who were sent to Corona to protect someone Dorner threatened in a rambling online manifesto. Thousands of police officers throughout Southern California and Nevada searched for Dorner, a former Los Angeles officer who was angry over his firing and began a deadly shooting rampage that he warned in an online posting would target those on the force who wronged him. (AP Photo/ Lenny Ignelzi)

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