An aircraft drops fire retardant to slow the spread of the Richard Spring fire, east of Lame Deer, Mont., on Aug. 11, 2021. A legal dispute in Montana could drastically curb the government’s use of aerial fire retardant to combat wildfires. Environmentalists have sued the U.S. Forest Service over waterways being polluted with the potentially toxic red slurry that’s dropped from aircraft. Forest Service officials have acknowledged more than 200 cases of retardant landing in water. (AP Photo/Matthew Brown, File)
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