A Las Vegas security guard who once patrolled his neighborhood with a semi-automatic rifle has been arrested on a federal charge in connection with possessing “destructive devices.” The FBI says he had bomb-making materials and was planning to attack a synagogue and a gay bar. 23 year old Conor Climo, also chatted online with white supremacists, quoted Adolf Hitler, and drew a sketch for attacks, according to the criminal complaint filed against him. Climo was arraigned on allegations he had bomb-making materials, which the FBI-led Joint Terrorism Task Force said it found in his home. The alleged crime is possession of an unregistered firearm.