ARIZONA — The dawning debate about the wildfire that jumped containment lines and destroyed the iconic, Grand Canyon Lodge underscores the trap that has frozen forest management efforts for half a century. The slow-moving Dragon Bravo fire sudden flared into a monster illustrates the extreme difficulty of restoring forest health after a century of clear cutting. …The National Park Service initially released reassuring bulletins suggesting fire crews would develop fire lines to contain the fire. …Then everything changed, as winds gusting to 40 miles an hour ushered in stormfronts. By July 12, the Dragon Fire had jumped containment lines. …The pattern Is all too familiar to fire ecology experts like ASU professor Stephen Pyne. He argues that… all-out fire suppression had increased tree densities across millions of acres of Northern Arizona from about 50 per acre to more like 1,000 per acre. …Moreover, construction of homes and towns in the most fire-prone landscapes has exploded.