Australian Navy personnel look at the UK nuclear-powered attack submarine HMS Astute docked at HMAS Stirling Royal Australian Navy base in Perth, Western Australia.

Source: http://www.srilankaguardian.org/2023/03/the-aukus-military-alliance-and.html

Born in Australia, Greg Keeley is a retired service-disabled Navy Combat Veteran who was commissioned in both the U.S. Navy and the Royal Australian Navy, serving in combat roles in Iraq, Afghanistan, Pacific and Middle East area operations.

Source: https://www.thebourbonflight.com/kda-welcomes-lawrenceburg-bourbon-company-as-newest-craft-member/

In November, the USS Mississippi made a port visit to the western Australian city of Perth, where it conducted training with members of the Royal Australian Navy, the US Defense Department said.

Source: https://krdo.com/news/national-world/cnn-national/2023/04/05/in-the-dark-depths-of-the-pacific-us-submarines-patrol-with-an-eye-fixed-firmly-on-china/