110923-N-AC887-001 ANNAPOLIS, Md. (Sept. 23, 2011) Secretary of the Navy (SECNAV) the Honorable Ray Mabus presides over a change of command and retirement ceremony where Chief of Naval Operations (CNO) Adm. Gary Roughead was relieved by Adm. Jon Greenert as CNO. ( Navy photo by Chief Mass Communication Specialist Sam Shavers/Released) US Navy 110923-N-AC887-001 Secretary of the Navy (SECNAV) the Honorable Ray Mabus presides over a change of command and retirement ceremony where C

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Keywords: armed, cno, conflict, forces, military, secnav, states, united, war