Steve Smith was looking out the bedroom window of his Sinagua Heights home Wednesday morning when he saw a flash that forced him to turn his head and sent his dog diving under the bed. At first, Smith didn’t know what had happened and compared the “bright red-orange light” to a flash bang grenade like he had used when he was in the military. But soon, all became clear. A thunderstorm over Flagstaff, which dropped a fourth of an inch of rain, brought lightning that appears to have started a fire on the roof of the neighboring home. The Flagstaff Police and Fire Departments received a call about the fire at 8:29 a.m., said police spokesperson Charles Hernandez.