Staff Sgt. Juan Aguilera, a sergeant instructor at Marine Corps Officer Candidate School in Quantico, Va., corrects an officer candidate during an exercise on Marine Corps Base Quantico on April 22, 2017. The exercise was designed to prepare officer candidates from Recruiting Stations Baltimore and Harrisburg for the physical and mental challenges of Marine Corps Officer Candidate School. Sergeant instructors train, screen and evaluate candidates, who must demonstrate a high level of leadership potential and commitment to success in order to earn a commission as an officer in the United States


Staff Sgt. Juan Aguilera, a sergeant instructor at Marine Corps Officer Candidate School in Quantico, Va., corrects an officer candidate during an exercise on Marine Corps Base Quantico on April 22, 2017. The exercise was designed to prepare officer candidates from Recruiting Stations Baltimore and Harrisburg for the physical and mental challenges of Marine Corps Officer Candidate School. Sergeant instructors train, screen and evaluate candidates, who must demonstrate a high level of leadership potential and commitment to success in order to earn a commission as an officer in the United States Marine Corps.


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Photo credit: © Ted Small / Alamy / Afripics
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