Eric Matthew Frein

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FILE - In this Oct. 31, 2014, file photo, Pennsylvania State Troopers escort Eric Matthew Frein, a survivalist accused of ambushing two Pennsylvania State Troopers outside their barracks late at night, from the police barracks in Blooming Grove, Pa. Frein led authorities on a 48-day manhunt through the heavily wooded Pocono Mountains before U.S. marshals captured him at an abandoned airplane hangar. He has pleaded not guilty. (Jason Farmer/The Times & Tribune via AP, File)