Again, the idea of the pilot projects is exactly to determine the most effective types of tests to use and where to apply them. There are concerns, obviously, if you're looking at the land border, about what that might mean from a congestion point of view. Consideration is even being given to testing prior to departure so that we can look at reduced congestion at the airport.
I talked a bit about trying to build a touchless journey. What we're really trying to do is to make sure that we can maintain physical distancing in an airport environment and reduce that congestion.
The pilot projects are giving us good information about what tests to use and where to apply them, and we're really proud to be working with our health colleagues on that. In terms of which specific test to use under what circumstances, I'd have to defer to my health colleagues for that.