Steve Brackeen Turunc competes in an obstacle course during Officer Candidates School training during this undated photo taken aboard Marine Corps Base Quantico. Turunc, whose late grandfather commanded a Marine rifle platoon during the Vietnam War, was among the 169 OCS graduates on Tuesday. - Steve Brackeen Turunc competes in an obstacle course during Officer Candidates School training during this undated photo taken aboard Marine Corps Base Quantico. Turunc, whose late grandfather commanded a Marine rifle platoon during the Vietnam War, was among the 169 OCS graduates on Tuesday.