To have an intense conflagration you need all components of the fire triangle: air, ignition and fuel. Mother Nature controls the air and some of the ignition (lightning strikes). The rest of ignition is man-caused – careless smokers, power mowers, downed power lines, catalytic converters, etc. …Fifty years ago, all trees capable of falling on power lines were removed….Now trees are pruned around lines and unbalanced. Intense fires are caused by environmental negligence. Take a course in Benefit Analysis. You can save one owl by stopping timber sale, but you’ll burn up 100 owls by not thinning the forests. Stop water being drafted from streams to save one frog, but boil 100 frogs when the fire gets away.