200610-N-FA490-1181 PACIFIC OCEAN (June 10, 2020) Fire Controlman 1st Class Tyler Thiel, assigned to the Arleigh Burke-class guided-missile destroyer USS Halsey (DDG 97), serves as mount safety observer during a pre-action aim calibration (PAC) fire on the close-in weapons system (CIWS) from the aft missile deck of Halsey, June 10, 2020. Halsey is deployed to the U.S. Southern Command area of responsibility to support Joint Interagency Task Force South�s mission, which includes counter illicit drug trafficking in the Caribbean Sea and eastern Pacific Ocean. (U.S. Navy photo by Mass Communication Specialist 3rd Class Andrew Langholf/Released)