U.S. Marine Corps Lance Cpl. Nicholas Stankiewicz,

U.S. Marine Corps Lance Cpl. Nicholas Stankiewicz, a systems administrator with Headquarters Battalion Security Platoon, 1st Marine Division (1STMARDIV), practices giving aid during Exercise Steel Knight 15 (SK-15) Combat Life Saver training aboard Marine Corps Air Ground Combat Center Twentynine Palms, Calif., Dec. 15, 2014. SK-15 is an annual training exercise developed to prepare 1STMARDIV personnel to execute military operations as a Ground Combat Element within a Marine Air-Ground Task Force. (U.S. Marine Corps photograph by LCpl. Adrianna R. Lincoln/RELEASED)