Sgt. Grant Martinez, Marine Special Operations Command

Sgt. Grant Martinez, Marine Special Operations Command District, performs a rescue on Sgt. Jeremiah Reilly, Marine Corps Instructor Trainer of Water Survival, during testing for the MCIWS course at Marine Corps Base Camp Johnson, N.C., March 12, 2013. Martinez, from Sunnyville, Calif., is one of more than 20 students attending the three-week MCIWS course. The course creates instructors who can train Marines to react and survive life-threatening situations in the water. (U.S. Marine Corps photo by Cpl. Chelsea Flowers Anderson)