New coverage centres on newly surfaced video from inside a freight train as it passed through a huge wildfire near Armstrong in northern Ontario, showing flames and dense smoke pressing in on both sides of the track. The footage adds a more immediate picture of the danger facing rail crews and helps explain why authorities and the railway operator moved to halt traffic and evacuate staff. It matters because it highlights how quickly wildfires can threaten transport links, workers and remote communities in fire-hit parts of Canada.

Canadian National Railway said three trains in the area were stopped because of the fire, including some carrying flammable materials, and crews were removed under emergency procedures. Earlier reports said crew members feared the blaze could overtake the train as conditions deteriorated around them. The incident forms part of a wider wildfire emergency in north-western Ontario, where 128 active fires were reported and evacuation orders were affecting several First Nation communities, while smoke was expected to spread beyond the immediate area.