Hon CHRIS HIPKINS: Because the specific requirements around an internal border, of course, can only be formalised and shaped up once we know the nature of the internal border that is likely to be required, whether it's a level 3-4 border, a level 2-4 border, and so on. Scenario planning for a variety of different scenarios around COVID-19 outbreaks has been happening over the last year and a half, but it's very difficult to finalise advice for specific plans if you don't know what the specific situation you're dealing with is.