I am unaware of any of this being done, or even contemplated. The end of the "cold war" caused all of us to let down our guard, and now we are going to pay for it.
And, while Australia is in fact very remote from Europe and the U.S., it is really quite close to the southern (Muslim) Philippines and Indonesia.
Hell, WE have the best Coast Guard in the world, and we can't keep thousands of Cubans and Haitians from floating to our shores in rickety boats, inner tubes, and bathtubs. (Not to mention interdicting drug smugglers- who could just as easily be smuggling weapons).