… of the Fort McKay First Nation. The checkpoint closed the … the Chipewyan Prairie Dene First Nation. In the Fort … of the Athabasca Chipewyan First Nation, Chief Alexandre Laviolette, … quickly overwhelm local resources. First Nation and Métis leaders say …… of the Fort McKay First Nation. The checkpoint closed the … the Chipewyan Prairie Dene First Nation. In the Fort … of the Athabasca Chipewyan First Nation, Chief Alexandre Laviolette, … quickly overwhelm local resources. First Nation and Métis leaders say …