This undated photo provided by the U.S. Air Force shows a Canadian Air Force F-18 Hornet jet (left) escorting a Russian TU-95 Bear heavy bomber out of Canadian airspace. Japanese interceptor jets were scrambled to intercept two TU-95s recently. (Associated Press)

This undated photo provided by the U.S. Air Force shows a Canadian Air Force F-18 Hornet jet (left) escorting a Russian TU-95 Bear heavy bomber out of Canadian airspace. Japanese interceptor jets were scrambled to intercept two TU-95s recently. (Associated Press)