The most recent physical evidence of Dorner’s whereabouts were the tracks leading away from his burned-out Nissan Titan pickup truck near the mountain community of Big Bear Lake, Calif., about 90 miles east of Los Angeles.
At a Friday morning press conference, San Bernardino County Sheriff John McMahon said officers were able to follow those tracks for about a half mile before the ground became frozen.
Because of the snowy weather, law enforcement helicopters with thermal-imaging systems can’t be used at the moment. But some 100 officers and FBI agents are using Sno-Cats and military-style armored personnel carriers with wheel chains to search an area that includes many abandoned cabins where Dorner might have sought shelter.
“We’re going to search regardless of the weather,” Sheriff McMahon said as the snow fell heavily around him. “Our primary concern is to make sure people in this community are safe.” As of Friday morning, ski resorts in the area were open but schools remained closed – because of security concerns as well as the weather.