The third order is the COVID-19 Public Health Response (Air Border and Isolation and Quarantine) Amendment Order 2021. This particular one makes some technical changes to the way we manage our managed isolation and quarantine facilities, dealing particularly with group allocations and group bookings. The fourth is a change to the required testing regime that we have in place—that is, people who have to be tested regularly as part of our surveillance to make sure that they haven't picked up COVID-19. It extends that to a wider group of people who work at the border, and it includes people who handle items removed within 72 hours from a managed isolation facility, within a plane or a ship, or have contact with other affected workers. It also increases the testing frequency for some groups of workers. It allows the Director-General of Health to authorise different testing methods, including saliva testing, and it requires a PCBU—person conducting a business or undertaking—to use the border workforce testing register to ensure that we have accurate records of all those who are being regularly tested. 