Repatriate Australians from Covid19 hotspots around the world including Third world countries with no possibility of pre departure quarantine and/or dodgy screening or testing. A non - zero percentage will be infected.
Use airliners for repatriation. Cram infected and non infected people and crews in an aluminium tube for 20+ hours.
On arrival, assume none of the crews and passengers are infected with Covid19.
Transport passengers, assumed to be uninfected mind you, to central city hotels that are not purpose built quarantine facilities and inform them they must stay there for 14 days.
Tend to the passengers needs - food, cleaning, laundry, etc. in the hotels using normal hotel staff and procedures - the staff go home to their families every night.
What could possibly go wrong?