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San Bernardino County Sheriff's officer Bernabe Ortiz holds a pistol as he searches a home for former Los Angeles police officer Christopher Dorner in Big Bear Lake, Calif, Sunday, Feb. 10, 2013. The hunt for the former Los Angeles police officer suspected in three killings entered a fourth day in snow-covered mountains Sunday, a day after the police chief ordered a review of the disciplinary case that led to the fugitive's firing and new details emerged of the evidence he left behind. (AP Photo/Jae C. Hong)