INDIAN OCEAN (Jan. 8, 2022) Sailors aboard the Arleigh Burke-class guided-missile destroyer USS O'Kane (DDG 77) fire M4 assault rifles during a weapons familiarization course, Jan. 8, 2022. O'Kane, part of the Essex Amphibious Ready Group (ARG) along with the 11th Marine Expeditionary Unit (MEU), is operating in the U.S. 7th Fleet area of operations to enhance interoperability with alliances and partners and serve as a ready response force to ensure maritime security and a free and open Indo-Pacific region. (U.S. Navy photo by Mass Communication Specialist 3rd Class Elisha Smith)