Former chiefs of naval operations (CNOs) gather for a group photograph at a conference. They include, from left: ADM Carlisle A.H. Trost, USN (Ret.); ADM James L. Holloway, USN (Ret.); ADM Thomas H. Moorer, USN (Ret.); Acting Secretary of the Navy Sean O'Keefe; ADM Frank B. Kelso II, the current CNO; ADM Elmo R. Zunwalt, USN (Ret.) and ADM Thomas B. Hayward, USN (Ret)