PORT HUENEME, Calif. (June 16, 2021) Steelworker Constructionman Nathaniel Middlebrook, assigned to U.S. Naval Mobile Construction Battalion 3, stands watch outside of the battalion aid station during a mass casualty scenario as part of Command Post Exercise 4 on board Naval Base Ventura County, Port Hueneme. Seabees are the expeditionary engineering and construction experts of the naval service. They provide task-tailored, adaptable and combat-ready engineering and construction forces that deploy to support Navy objectives globally. (U.S. Navy photo by Mass Communication Specialist 1st Class Michael Lopez)