190905-M-IK146-1012 INDIAN HEAD, Md. (Sept. 5, 2019) A U.S. Navy Sailor with Assault Craft Unit (ACU) 2 guides a Landing Craft Utility boat into the ramp during Capital Shield 19, on the Potomac River, Sep 5, 2019. Capital Shield is an exercise to train and prepare emergency responders in the National Capital Region for chemical exposure and response. (U.S. Marine Corps photo by Lance Cpl. Sarah N. Petrock/Released)