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GARDEN ISLAND, HMAS Stirling, Western Australia, Australia (October 29, 2025) – USS Vermont (SSN 792) arrives at HMAS Stirling, Western Australia on Oct. 29, as part of a scheduled port visit before a planned submarine maintenance period (SMP). The SMP showcased Pearl Harbor Naval Shipyard & Intermediate Maintenance Facility’s ability to conduct maintenance in Western Australia and its training of Australian maintainers to support the establishment of Submarine Rotational Force – West as early as 2027 as part of AUKUS Pillar I, the trilateral security agreement between Australia, the United Kingdom and the United States. The AUKUS I&A Program Office is the U.S. Navy office responsible for executing the trilateral partnership to assist Australia in acquiring conventionally armed, nuclear-powered attack submarines at the earliest possible date while setting the highest nuclear stewardship standards and continuing to maintain the highest nonproliferation standard. (U.S. Navy Photo by Ashley Calingo)