Airtankers, waterbombers, and air attack are all common terms used to refer to aerial firefighting. I can't imagine this is something unique to North America but both the United States and Canada employ planes and helicopters to drop water and fire retardants on forest fires in remote areas where conventional firefighting equipment cannot reach.

We also have a form of firefighter called a Smoke Jumper that's the equivalent of a Paratrooper for fighting fires. They're deployed in these remote areas to clear out areas ahead of fires to constrict or redirect fires.