It is doubtful that the Australian government has plans like the US does for apocalyptic scenarios, but given what the plans are, that is probably a good thing for Aussies, seeing what the oppressive states did with the Covid mandates and lockdowns. The presidential emergency action documents that have recently been disclosed show but some of the plans the US executive have in the case of a disaster, such as nuclear attack or an EMP strike that takes down the grid. The emergency and wartime powers will achieve in an instant what the Biden administration is doing right now, including giving wide powers of imprisonment, shut down communication networks (that are still working), impose martial law, and perhaps confiscate guns. This poses a temptation for the political tyrants who rule us, and lust for even more power, to set up a false flag, to make it all happen.
https://www.nytimes.com/2022/05/26/us/internet-president-emergency-orders.html