The Commandant of the Marine Corps, Gen. James F. Amos, center, speaks with guests while attending the 2012 Heroes of Military Medicine awards dinner at the Andrew W. Mellon Auditorium in Washington, D.C., May 2, 2012. The event recognizes professionals in the military medical system and the assistance they provide to military members. (U.S. Marine Corps photo by Sgt. Mallory S. VanderSchans/Released)