The swarm drones are developed so the damage they could do is enormous BBC News
Imagine ---- 20 swarm drones worth a few thousand each dispatched from a fishing boat with the co-ordinates programed in with simply weapons
How does that rate against Subs that will possibly never float, fighter aircraft that cannot get in the air due to all the recalls and we are a sitting duck
But we are lucky that due to Canberra being so far inland our politicians would escape unscathed