They should have started worrying 4 years ago.. The Aussies too. The Aussies even more than us, should be expanding their Sub fleet and their ASW Tech.
Isn’t it the Aussies licensing high speed catamarrans that they convert to military platforms.?
We should also worry about how much of America’s steel and microchips are produced in China. One day we may find ourselves in a conflict in which our diminshed manufacturing capablility is unable to produce or obtain military hardware and software.