Water systems are vulnerable to melting plastic components, toxic contamination and failures that can leave firefighters without flowing water.

At nearly 145,000 acres, the Dragon Bravo Fire burning at the North Rim of the Grand Canyon is one of the largest wildfires in Arizona history. And it’s also the first wildfire on record to have burned both in and outside the canyon’s basin.

A wildfire burning near the Grand Canyon has grown into what experts call a 'megafire,' and it has even developed its own weather.