Commandant of the Marine Corps Gen. James F. Amos, center, stands alongside the Chief of Naval Operations, Adm. Jonathan Greenert, right, during the U.S. Naval Academy graduation and commissioning ceremony in Annapolis, Md, May 29, 2012. Gen. Amos delivered the Oath of Office to Marine graduates of the class of 2012. (U.S. Marine Corps photo by Sgt. Mallory S. VanderSchans/Released)