Two years ago, a wildfire was raging in the foothills of North Arizona. The Granite Mountain Hotshots, a team of elite firefighters from Prescott, Ariz., were on the ground, battling the blaze.
Then the weather and the winds shifted, and the two-day-old Yarnell Hill Fire changed course. The commander had a huge decision to make: stay on safe ground, or try to cut off the blaze?
He made the call — and before the day was over, 19 hotshot firefighters were dead. It was one of the deadliest incidents for wildland firefighters in U.S. history.