U.S. Marine Corps Staff Sgt. Phillip S. Clinton, with

U.S. Marine Corps Staff Sgt. Phillip S. Clinton, with Lima Company, 3rd Battalion, 6th Marine Regiment, 3rd Marine Division, III Marine Expeditionary Force (MEF), participates in unit physical training at Naval Computer and Telecommunications Station Guam in Dededo, Guam, March 8, 2013, during exercise Guahan Shield 2013. Guahan Shield 2013 is an exercise designed to maintain and enhance the capabilities of elements of the III MEF while operating in a forward-deployed environment. (U.S. Marine Corps photo by Lance Cpl. Jeraco Jenkins/Released)