Michael Mullen

Mullen was the 32nd vice chief of naval operations from August 2003 to August 2004. He then was the commander of both the United States Naval Forces Europe and Africa and the Allied Joint Force Command Naples from October 2004 to May 2005. From July 2005 to September 2007, Mullen served as the Navy's 28th chief of naval operations.
As chairman of the Joint Chiefs of Staff, Mullen was the highest-ranking officer in the United States Armed Forces and diversified the top ranks of the Pentagon. He retired from the Navy after over 42 years of service. Since 2012, Mullen has been a visiting professor at the Princeton School of Public and International Affairs. Provided by Wikipedia