The National Park Service is defending its handling of a lightning-sparked wildfire that destroyed the nearly century-old Grand Canyon Lodge and dozens of historic cabins, saying containment lines ha...

Within days, temperatures soared and humidity dropped, and when winds developed, the fire exploded.

"As stewards of some of our country's most beloved national treasures, we are devastated by the loss of the Grand Canyon Lodge," Aramark, the company that operated the lodge, said in a statement.