If I was an F18 pilot I'd want to smash into the circuit at 600kts (can they do that?) if I was a taxpayer I'd want those F18 pilots smashing into the circuit at 600kts. If they're saving my arse one day I want the bastards to do it at 600kts, not a pissy 350kts coz they've forgotten how to fly fast.
Get a grip, the RAAF own that airport, if you want to fly a piece of **** A320 into there and the boys in blue are inbound, too bad, you lose. You spin and wait.