Petty Officer 1st Class Chris Johnson, a maritime enforcement specialist at U.S. Coast Guard Port Security Unit 312 (PSU 312) conducts a safety briefing prior to a simulated vital asset protection scenario in Gladstone, Australia, July 24, 2023. PSU 312 is in Australia training during Operation Talisman Sabre 2023, a joint bi-annual training exercise between U.S. and Australia. (U.S. Coast Guard photo by Petty Officer 2nd Class Devyn Trinh).