A former BBC sports reporter in the Northwest Territories has become central to the world’s understanding of the wildfires threatening the territory and its capital, Yellowknife. Ollie Williams is the editor and co-founder of Cabin Radio, a news outlet in Yellowknife that has become a cherished source of immediate local information about the fires threatening the city and forcing mass evacuations. Williams and his small team have been filing daily, hourly and even minute-by-minute updates on what’s happening, sometimes from inside vehicles as they, too, flee the city. He’s also been doing interviews with national and international media to explain just how these wildfires are affecting the vast, sparsely populated territory and its residents. Cabin Radio’s ascent to international notice is similar to that of the Port-aux-Basques, N.L., paper Wreckhouse…