Marine Infantry Platoon Sergeant Course students run past the remnants of recent rainstorms at Camp Pendleton, Calif., during the course's strenuous physical training program, November 15, 2002. Students must demonstrate mental prowess as well as brute strength. "The PT program is designed to aid them in retaining the combat skills already taught," said Gunnery Sgt. Tracy D. Offutt, chief-instructor for the course.