A sniper started a fire and then killed two firefighters he had lured to the scene in Idaho, a local sheriff has said. A third firefighter underwent surgery after being wounded, Bob Norris, the sheriff of Kootenai County, said. "We do believe that the suspect started the fire," Mr Norris told a news conference. "This was a total ambush. These firefighters did not have a chance #US #UnitedSates #Firefighters SUBSCRIBE to our YouTube channel for more videos: http://www.youtube.com/skynews Follow