Police are searching for the suspect in the ambush of two Pennsylvania State Troopers. They say Eric Frein killed Byson Dickson and seriously wounded Alex Douglass. Now we are learning Frein belongs to a military simulation group that reenacts battles from the Cold War. There are fears that he is using 'survivalist' skills to act out one of those battles in real life. Jason Carroll has the latest on the manhunt.
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