Another paranoid wingnut acting out the kind of craziness probably fed into his head by the likes of Glenn Beck and extremist websites, and one cop is now dead as a result: Pennsylvania authorities have identified a 31-year-old man they described as a survivalist with a strong desire to kill police officers as the man who allegedly shot and killed a state trooper in an ambush outside a police barracks Friday night. Eric Matthew Frein, a Pennsylvania resident, allegedly used a .308-caliber rifle to gun down Cpl.