 to be seriously injured. When we look at the trends over time, there's no clear trend in the rate of serious injuries. And so that's very interesting. We know there's been a 55% increase, for example, in severe turbulence in the North Atlantic, but there's no trend in injuries. So that's telling us that something else is happening, some countermeasure, which must be pilots' ability to avoid the turbulence and the response of aircraft to a given patch of turbulence.