Air Force has 24 F/A-18F Super Hornets which, in conjunction with F-35A Lightning II's and EA-18G Growlers, ensure that Australia's air combat capability edge is maintained.
The twin seat F/A-18F Super Hornet can undertake:
air interception
air combat
close air support of ground troops
interception of enemy supply lines including shipping
More:
www.airforce.gov.au/aircraft/18f-super-hornet