Mr. Chair, I wonder if I could add to that.
The notice is for the crews who are operating in and around the area that's impacted. I'll give an example. We issue NOTAMs quite frequently, such as for an incapacitated aircraft on a runway, lighting issues on another runway or potential construction on another runway. There could be many instances.
If you have an incapacitated aircraft on a runway, yes, many individuals are aware of that. They're very aware, and the NOTAM hasn't been issued yet. Individuals in that airspace are working around it. It could be reported in the media as well, and a NOTAM might follow it. It's the instrument of information to crews. The decision to issue the NOTAM has already been made behind that.
Nav Canada and Transport Canada work very quickly. We can issue NOTAMs fairly quickly. I think in this case we were speaking about the potential of issuing a NOTAM even before, earlier into the weekend, so that the system was ready if the decision was taken.
Again, the NOTAM is the notice. It's the poster to tell everyone that this action is being taken. The decision-making behind it can occur, and individuals can absolutely be aware of the notice that will be coming out, before the actual notice is available.