The Commandant of the Marine Corps, Gen. James F. Amos, center, participates in an award ceremony Air Force Senior Airman Emily Shertzer, the 3rd place women's overall finisher, during the 38th Marine Corps Marathon in Arlington, Va., Oct. 27, 2013. The Marathon consisted of 23,480 participants routing their way through Arlington, up Rock Creek Parkway, along the monuments and past the Pentagon, finishing at the Marine Corps War Memorial. (U.S. Marine Corps photo by Sgt. Mallory S. VanderSchans/Released)