U.S. Navy Seaman Cameron Alexander, a hospitalman with 2nd Medical Battalion, conducts physical exercises before a tactical combat casualty care exercise at Camp Lejeune, N.C., Feb. 12, 2016. Sailors were intentionally exhausted prior to beginning the simulation. (U.S. Marine Corps photo by Cpl. Paul S. Martinez/Released) - U.S. Navy Seaman Cameron Alexander, a hospitalman with 2nd Medical Battalion, conducts physical exercises before a tactical combat casualty care exercise at Camp Lejeune, N.C., Feb. 12, 2016. Sailors were intentionally exhausted prior to beginning the simulation. (U.S. Marine Corps photo by Cpl. Paul S. Martinez/Released)