Rt Hon JACINDA ARDERN (Prime Minister): Yes. Delta has been a game-changer, and so, of course, that means that we've needed to change our plan. Since the last nationwide lockdown, the all-of-Government group and the Department of Prime Minister and Cabinet and the Ministry of Health have worked with all relevant agencies across Government to make continuous improvements to our alert level system and our response framework. These changes have been made in anticipation of the possibility of variants of concern—noting, though, that Delta and some of the research around Delta has really only emerged in recent months. These changes, though, include extensive use of whole genome sequencing; waste-water testing; boosting surge testing capacity; contact tracing capacity; requirements for face coverings; ongoing refinements to public communication and messaging; updates to the NZ COVID Tracer App and Bluetooth tracing; pre-departure testing; and improving managed isolation management, including additional testing and cohorting. As I said, as COVID has changed, we have too.