Using a helicopter and a machine that pumps out 100 flaming ping-pong balls every minute, a team from the Fort Nelson First Nation recently took to the air to set fire to almost 3,000 hectares of forest in the Liard River area in northeastern British Columbia.
It's part of the First Nation's ongoing efforts to help a threatened herd of wood bison.
"Prescribed fire is very important to keep range land open, as far as the ability to access forage and vegetation for bison," said Sonja Leverkus, an ecologist working with the First Nation.
The wood bison were reintroduced to Nordquist Lake two decades ago, after being extirpated from the area in 1906.
Over time, the small herd of 120 to 180 animals has strayed far from its home range, attracted by easier grazing alongside the Alaska Highway.
It's estimated five to 20 bison die every year as a result of vehicle accidents, and the threatened species has become a hazard to motorists.