last time I was in Darwin there were almost as many Indonesians as Oztralians - most people in OZ would never want to live there
but, seriously - why would you "deploy forward " to Guam etc?
Haven't you learnt what happens when you get into American led fights in places that you have no real interests???
The TNI-AU are much closer to the Chinese and even have some Chinese claims over their offshore areas - hence the need (maybe) for modern weaponry