In 2013, massive wildfires scorched the Valles Caldera National Preserve, which disrupted the series production. Three fires started over a three-week period, two at the same time. The Prescott Fire Department's Granite Mountain Hotshots assisted in preventing the destruction of the area around where Walt's house is filmed. Nineteen of the Hotshots' 20 members were later killed battling the 2013 Yarnell Hill Fire in Arizona. The second season's finale honored them in the closing credits.