201111-N-OA391-1003 SAN DIEGO, Calif. (Nov. 11, 2020) Chief Equipment Operator Dmitriy Khvatkov (right) and Ensign Alfred Brown (left) assigned to Naval Mobile Construction Battalion FOUR (NMCB-4) debrief the NMCB-4 Commanding Officer, Cmdr. Troy Brown, during his site visit to the pile driving site. NMCB-4 is conducting pile driving for a Short Approach Lighting System for Naval Air Station North Island. Seabees are the expeditionary engineering and construction experts of the naval service providing task-tailored, adaptable and combat-ready engineering and construction forces that deploy to support global Navy objectives. (U.S. Navy photo by Engineering Aide 2nd Class Vincent Paul Arnuco/ Released)