YELLOWKNIFE- Crews continued Tuesday to battle wildfires that have forced seven out of every 10 Northwest Territories residents from their homes, or about 30,000 people. Fire information officer Mike Westwick says one fire remains about 15 kilometres from Yellowknife, the capital of 20,000 people, and one of multiple communities under an evacuation order. Westwick says firefighting work at Fort Smith, on the Alberta-N.W.T. boundary, is expected to be particularly challenging given temperatures approaching 30 C. “The situation remains serious across all our communities with active fires,” Westwick said in an interview. “Air tankers are working tirelessly across our territory to knock down the intensity of these fires and give time for crews to get good work done on the ground.” He said flames were about four kilometres from Fort Smith…