Greenert is the senior military officer in the Department of the Navy. He is responsible to the Secretary of the Navy for the command, utilization of resources, and operating efficiency of the operating forces of the Navy and of the Navy shore activities assigned by the secretary.
Greenert is a member of the Joint Chiefs of Staff and is the principal naval adviser to the president and to the secretary on the conduct of war. He is also the principal adviser and naval executive to the secretary on the conduct of activities of the Department of the Navy.
Prior to becoming CNO, Greenert was vice chief of naval operations from August 2009-August 2011.
Greenert’s career as a submariner includes assignments on the USS Flying Fish, USS Tautog, Submarine NR-1 and USS Michigan. He served in command of the USS Honolulu from March 1991-July 1993.
Later, Greenert served in various fleet command assignments, including command of Submarine Squadron 11, U.S. Naval Forces Marinas, U.S. 7th Fleet and U.S. Fleet Forces Command.
Greenert has received six Distinguished Service Medal awards, four Defense Superior Service Medal awards and four Legion of Merit awards. In 1992 he was awarded the Vice Admiral Stockdale Award for inspirational leadership.
Greenert is a native of Butler, Pa. He graduated from the U.S. Naval Academy in 1975 and completed studies in nuclear power for service as a submarine officer.