Australian Defense Force Chief Gen. David Hurley, left, U.S. Army Gen. Martin E. Dempsey, center, chairman of the Joint Chiefs of Staff, and U.S. Navy Adm. Samuel J. Locklear III, commander of U.S. Pacific Command, salute during a wreath-laying ceremony at the Tomb of the Unknown Soldier in Arlington National Cemetery, Va., Nov. 20, 2013. Australian Defense Force Chief Gen. David Hurley, left, U.S. Army Gen. Martin E. Dempsey, center, chairman of the Joint Chiefs of Staff, and U.S. Navy Adm. Samuel J. Locklear III, commander of U.S. Pacific Command, salute during a wreath-laying ceremony at the Tomb of the Unknown Soldier in Arlington National Cemetery, Va., Nov. 20, 2013. SHARE: Download: Full Size (0.62 MB) Tags: Photo Essays Credit: VIRIN: 086345-O-AXO79-273.jpg Photo Gallery