A fatal collision at LaGuardia Airport last week marked the start of a difficult period for Air Canada, culminating on Monday with its CEO announcing he will soon retire. Michael Rousseau's departure comes after he received heavy criticism in the aftermath of the incident, which killed two of the airline's pilots. But the backlash was not due to the collision itself. Rather, it was sparked by Rousseau's condolences to the pilots, which were delivered almost entirely in English. Prime Minister