In terms of the airlines, we've worked with them to ensure that they are using crews that are separate. There are separate crews flying on the green zone flights to those flying on the red zone flights. There is a process in place to ensure that planes that are flying, both green and red zone flights are sanitised thoroughly between flights, again to reduce any risk of unwanted COVID-19 transmission. It's been important that we make sure that all of those arrangements are in place. 