190824-N-LI768-1003 PACIFIC OCEAN (Aug. 23, 2019) U.S. Navy Machinist’s Mate 1st Class Paul Bradley, left, assigned to the guided-missile destroyer USS Preble (DDG 88), learns about engineering systems aboard the Royal Australian Navy guided-missile destroyer HMAS Brisbane (DDG 41). Destroyer Squadron 31 staff and several Sailors embarked aboard Brisbane to learn about their shipboard operations and enhance the U.S. Navy partnership with the Royal Australian Navy. (U.S. Navy photo by Mass Communication Specialist 2nd Class Devin M. Langer/Released)