180421-N-BD308-0095 OKINAWA, Japan (April 21, 2018) Sailors lower the national ensign to half-mast in honor of former first lady Barbara Bush as the amphibious assault ship USS Wasp (LHD 1) moors in Okinawa, Japan, to disembark the 31st Marine Expeditionary Unit (31st MEU). Wasp, part of the Wasp Expeditionary Strike Group, has been operating with the MEU for nearly two months as part of a routine patrol in the Indo-Pacific. (U.S. Navy photo by Mass Communication Specialist 3rd Class Levingston Lewis/Released)