180318-N-RI884-0065 OKINAWA, Japan (March 18, 2018) Marines assigned to the 31st Marine Expeditionary Unit (31st MEU) board the amphibious assault ship USS Wasp (LHD 1). The Wasp Expeditionary Strike Group is conducting a regional patrol meant to strengthen regional alliances, provide rapid-response capability, and advance the Up-Gunned ESG Concept. (U.S. Navy photo by Mass Communication Specialist 1st Class Daniel Barker/Released)