190619-M-EL370-0115 QUANTICO, Va. (June, 16,2019) An officer candidate emerges from the water during the "Quigley" portion of the Combat Course at Officer Candidate School at Marine Corps Base Quantico, Virginia, June 19, 2019. The Combat Course tests the candidates’ ability to move and overcome physical obstacles as a squad. The mission of Officer Candidate's School is to educate and train officer candidates in Marine Corps knowledge and skills within a controlled and challenging environment in order to evaluate and screen individuals for the leadership, moral, mental, and physical qualities required for commissioning as a Marine Corps officer. (U.S. Marine Corps photo by Lance Cpl. Phuchung Nguyen/Released)