The Super Hornets sorta replaced the F111s and are still flying out of Amberley. One fell on its nose into a ditch this week.
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They are a Hornet on steroids, look the same, but much bigger, and louder.
I do miss seeing the F-111s flying around. They were a lot bigger than the F-18s and the noise was incredible. A deep thunderous roar instead of the whining turbo like sound of the F-18.
The F-111s were a better airframe for a country like Australia with a large area to cover and sparse defensive resources as it was a jack of all trades. The ferry range of over 5700kms and top speed over Mach 3 were very useful here in Australia and gave us a quick strike capability but unfortunately they were very expensive to operate later in their life and the US no longer used them so we had to retire ours.
The US just moved over to the B-1 Lancer for its supersonic strike bomber role on the retirement of their F-111s but we no longer have a strike bomber capability at all with the retirement of the F-111. Our airforce is now entirely defensive in nature and if we were attacked we would struggle to mount any kind of counter offensive ourselves and would be reliant on the US to counter strike.