Again, it's premature to know for sure. Our colleagues from Health Canada may have some views on that as well, but it's certainly, I would say, in the repertoire of tools that we can bring to bear to manage the health risk.
For example, we talked about testing looking at people coming into the country and if there would be a requirement for a test prior to departure. Would we be looking for proof of vaccination prior to people getting on an aircraft? Those are certainly all options we're looking at, but it's premature to make any declarations at this point in time.