 Treaty Three Police services 18,550 First Nations residents in 28 First Nation Territories in the Kenora and Rainy River districts.Due to the vast patrol area, (55,000 square miles) T3PS was divided into two major "sub-divisions" with smaller satellite detachments left over from the OPP administered program.The Kenora Sub-division was headquartered on Niisaachewan Anishinaabe Nation.