Vice Chairman of the Joint Chiefs of Staff Navy Adm. James A. Winnefeld Jr. delivers the keynote address during a Pearl Harbor remembrance ceremony Dec. 7, 2012, at the National World War II Memorial in Washington, D.C. The event marked the 71st anniversary of the attack by Japanese forces on U.S. military facilities at Pearl Harbor, Hawaii. (Photo by Staff Sgt. Sun L. Vega, U.S. Army/Released)