U.S. Marine candidates with Officer Candidates school

U.S. Marine candidates with Officer Candidates school (OCS) participate in an obstacle course at OCS, Marine Corps Base Quantico, Va., on Jan. 16,2018. The mission of OCS 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 qualities required for commissioning as a Marine Corps officer. (U.S. Marine Corps photo by Lance Cpl. Yasmin D. Perez)