Firefighters try to control a back burn as the Carr fire continues to spread towards the towns of Douglas City and Lewiston near Redding, California on July 31, 2018. A 70-year-old woman and her two great-grandchildren were among six people killed when a wildfire engulfed entire communities in northern California, officials and family members said. (Photo/Agencies)
Firefighters try to control a back burn as the Carr fire continues to spread towards the towns of Douglas City and Lewiston near Redding, California on July 31, 2018. A 70-year-old woman and her two great-grandchildren were among six people killed when a wildfire engulfed entire communities in northern California, officials and family members said. (Photo/Agencies)
A firefighter lights backfires while battling the Ranch Fire (Mendocino Complex) north of Upper Lake, California, U.S. August 1, 2018. A 70-year-old woman and her two great-grandchildren were among six people killed when a wildfire engulfed entire communities in northern California, officials and family members said. (Photo/Agencies)
A firefighter lights backfires while battling the Ranch Fire (Mendocino Complex) north of Upper Lake, California, U.S. August 1, 2018. A 70-year-old woman and her two great-grandchildren were among six people killed when a wildfire engulfed entire communities in northern California, officials and family members said. (Photo/Agencies)
An aircraft drops fire retardant to slow the spread of the Carr Fire, west of Redding, California, U.S. July 27, 2018. A 70-year-old woman and her two great-grandchildren were among six people killed when a wildfire engulfed entire communities in northern California, officials and family members said. (Photo/Agencies)
A structure burns out of control in the River Fire (Mendocino Complex) in Lakeport, California, U.S. July 31, 2018. A 70-year-old woman and her two great-grandchildren were among six people killed when a wildfire engulfed entire communities in northern California, officials and family members said. (Photo/Agencies)
A structure burns out of control in the River Fire (Mendocino Complex) in Lakeport, California, U.S. July 31, 2018. A 70-year-old woman and her two great-grandchildren were among six people killed when a wildfire engulfed entire communities in northern California, officials and family members said. (Photo/Agencies)