I'll start that answer, and perhaps my colleagues from Global Affairs might want to speak about public notice.
I'll say, first of all, that we knew, based on the activity and the heightened tensions in that area, that the conflict had escalated. On that date, we talked to Air Canada, which was our only Canadian air carrier that was flying in and around that region on a flight from Dubai. They had decided to reroute so they weren't flying over that specific region, given its tensions. We spoke with Air Canada and had discussions with the FAA as well. The FAA had issued a notice—we call it a NOTAM, a notice to airmen—about three hours before PS752 took off.
Back to your direct question, what specifically was told to the passengers on that plane, I do not know. Our interactions, again, were with Air Canada. We also tweeted out information that Canada and Transport Canada were actively monitoring the area that night because of the concern.