OTTAWA - A joint northern military exercise involving Canada, the U.S. and Russia has wrapped up successfully.
It was the second year for Exercise Vigilant Eagle.
This drill began Sunday with a simulated American passenger jetliner flying over Alaska and not responding to air traffic controllers.
It was guided to safety after detailed exchanges among Russian, Canadian and U.S. aircraft and their command-and-control centres.
A U.S. military spokesman in Alaska tells The Canadian Press the exercise was conducted "flawlessly" and addressed many past communications concerns.
The Canadian military says the first version of Vigilant Eagle last year needed to overcome old Cold War suspicions and an "immense" language barrier, but was a success.