A firefighting air tanker drops Phos-check fire retardant near firefighters cutting a line on a ridge in the steep and rugged terrain rising into the San Gabriel Mountains to fight the Sierra Fire on April 28, 2008, near Sierra Madre, California. #

A California Department of Forestry firefighting helicopter is dwarfed against an enormous smoke column rising from upper Borrego Palm Canyon in the Anza-Borrego Desert State Park near the boundary of the Los Coyotes Indian Reservation on August 7, 2002, west of Borrego Springs, California. #

Passengers on a pirate-themed ship watch as a Carson Super S-61 firefighting helicopter draws up water from Big Bear Lake while fighting the Butler 2 Fire on September 18, 2007, near Fawnskin, California. #

An air tanker drops fire retardant on the 1,500 acre Troy Fire burning out of control east of Laguna Mountain on June 19, 2002, northeast of Pine Valley, California. #

Firefighters are forced to retreat as flames close in on them in Placerita Canyon at the Sand Fire on July 24, 2016, in Santa Clarita, California. Triple-digit temperatures and dry conditions are fueling the wildfire, which has burned across at least 22,000 acres so far and is only 10% contained. #

Large flames are blown from burning mobile homes by strong wind as most of the homes in the Oakridge mobile home park, which reportedly has 600-800 homes, lie in ruins after burning in the Sylmar Fire on November 15, 2008, in Sylmar, California. #

The forest burns in Lost Valley as the Coyote Fire burns more than 11,000 acres of chaparral and forest on the night of July 17 and into the morning of July 18, 2003, six miles northeast of Warner Springs, California. #

A strong wind blows embers from a burning tree trunk in Lost Valley as the Coyote Fire burned more than 11,000 acres of chaparral and forest on the night of July 17 and into the morning of July 18, 2003, six miles northeast of Warner Springs, California. #

A charred landscape is left in the wake of the 250 square mile Station fire as firefighters work to complete a defensible fireline to contain the massive blaze in the San Gabriel Mountains on September 16, 2009, in the Angeles National Forest, northeast of Los Angeles, California. #

A U.S. Forest Service firefighter uses a pistol to fire flares into brush to set a backfire to control the Woodhouse fire, also being called the Calimesa fire, in San Timoteo Canyon on October 6, 2005, near Calimesa, in Riverside County, California. #

A CL-415 SuperScooper firefighting aircraft, newly-arrived to the Los Angeles County Fire Department on lease from the government of Quebec, drops water on the Warm Fire after sunset on August 16, 2015, in the Angeles National Forest north of Castaic, California. #

An Erickson Skycrane fire-fighting helicopter drops green Hydromulch on Griffith Park hillsides where, months before, a wildfire burned more than 1,000 acres of native brush on about 25 percent of the nation's biggest urban park on October 19, 2007 in Los Angeles, California. The city has hired experts to blanket 480 acres with Hydromulch at a cost of $2 million to fertilize and stabilize denuded slopes that could give way during winter rainstorms. The hills are primarily covered with native Chaparral brush habitat which has depended for thousands of years on a cycle of natural wildfires to maintain the health of the ecosystem. #