A plane takes off from the Ottawa International Airport in a file photo. A plane takes off from the Ottawa International Airport in a file photo. The Canadian Press/Adrian Wyld Canada’s air navigation service provider says it is responding to threats directed at its facilities located in airports across the country. Bomb threats were received at facilities in Ottawa, Montreal, Edmonton, Winnipeg, Calgary, and Vancouver early this morning, Nav Canada said in a social media post on July 3. Air...