Authorities in Big Bear have spotted fresh tracks believed to be those of a fugitive ex-Los Angeles police officer wanted in connection with a series of shootings and are combing the area for him, a Fire Department official told The Times. Big Bear Lake Fire Department Asst. Chief Mark Mills also said the burning pickup discovered on a forest road has been linked to Christopher Jordan Dorner, 33, sought in connection with a series of shootings that have left three people dead and two wounded. TV helicopters showed the pickup being readied to be towed from the scene. The truck...