Petty Officer 3rd Class James Hyles (left), a Combat Lifesaver instructor with Weapons Company, 2nd Battalion, 2nd Marine Regiment, explains to a student how to keep the victim stable during the practical application portion of the Combat Lifesaver course at Marine Corps Base Camp Lejeune, N.C., Aug. 6, 2015. The three-day CLS course consisted of classroom instruction and practical application that included treating serious wounds that could occur in a combat situation. - Petty Officer 3rd Class James Hyles (left), a Combat Lifesaver instructor with Weapons Company, 2nd Battalion, 2nd Marine Regiment, explains to a student how to keep the victim stable during the practical application portion of the Combat Lifesaver course at Marine Corps Base Camp Lejeune, N.C., Aug. 6, 2015. The three-day CLS course consisted of classroom instruction and practical application that included treating serious wounds that could occur in a combat situation.