SUBMARINE BASE NEW LONDON, Conn. (April 18, 2024) Royal Australian Navy Commodore David Frost, center right, Naval Attache to Washington, presents a graduation certificate to RAN Lt. Cmdr. James Heydon during a graduation ceremony for the first AUKUS students in the Submarine Officer Basic Course at Submarine Base New London, April 18, 2024. The graduation marks the first U.S. Naval Submarine School graduation for Royal Australian Navy officers as part of AUKUS and their last leg of nuclear submarine training before heading out into the U.S. Naval Submarine Force. (U.S. Navy photos by John Narewski)