PACIFIC OCEAN (March 25, 2019) A U.S. Marine assigned to Marine Medium Tiltrotor Squadron (VMM) 163 (Reinforced), 11th Marine Expeditionary Unit (MEU), conducts a pre-flight check on an RQ-21A Blackjack unmanned aerial system aboard the San Antonio-class amphibious transport dock ship USS John P. Murtha (LPD 26). The Marines and Sailors of the 11th MEU are conducting routine operations as part of the Boxer Amphibious Ready Group in the eastern Pacific Ocean. (U.S. Marine Corps photo by Lance Cpl. Israel Chincio)