Yes. I have two very quick points.
The first is on your point about safety. To be clear, safety, as you can imagine, is non-negotiable for airlines. That is an absolute line that will not be crossed in any way, shape or form. Of course, safety is, in part, regulatory. There are dozens and dozens of safety regulations and they are, in part, the call of pilots, which is how it should be, given certain circumstances.
As I've said in my remarks, to suggest that somehow safety is being used as an excuse to avoid...or as a cause for disruption, it is not an excuse. It's a legitimate regulatory function that airlines must pursue.
The second very quick point is that on the case of staff or pilots who call in sick, for example, contingency planning is something that airlines do on a daily basis. It's a very sophisticated function of what they have to do if crews or pilots call in sick or have some issue. However, as Mr. Gibbons said, it's not always possible, especially when we had a COVID period when pilots were sick. I think we can all agree we would not have wanted them going into work.
If you are in a small remote area, for example, getting a replacement crew can be difficult. There are certain logistical challenges. Some are associated with geography.
Again, safety is a non-negotiable function for airlines.