U.S. Marines assigned to the 31st Marine Expeditionary Unit (MEU) prepare fire a Light Armored Vehicle’s M242 Bushmaster 25 mm chain gun on the flight deck of the amphibious assault ship USS Wasp (LHD 1) in the South China Sea, Sept. 24, 2018.
The Wasp, flagship of the Wasp Amphibious Ready Group, with embarked 31st MEU, is operating in the Indo-Pacific region to enhance interoperability with partners and serve as a ready-response force for any type of contingency. (U.S. Navy photo by Mass Communication specialist 3rd Class Taylor King) Original public domain image from Flickr