180604-M-PK127-0001 PACIFIC OCEAN (June 4, 2018)Marines assigned to Battalion Landing Team 3/1, 13th Marine Expeditionary Unit (13th MEU), stand by for flight operations during a strait transit aboard the Wasp-class amphibious assault ship USS Essex (LHD 2)in the Pacific Ocean. The Essex Amphibious Ready Group and 13th MEU are conducting a composite training unit exercise, which is the final exercise before the unit's upcoming deployment. (U.S. Marine Corps photo by Cpl. Francisco J. Diaz Jr./Released)