Admiral Mullen served as the 17th Chairman of the Joint Chiefs of Staff from October 2007 until his retirement in 2011. Previously, he served as the 28th Chief of Naval Operations (“CNO”) from July 2005 to 2007. CNO was one of four different four-star assignments Admiral Mullen held; the other three included Commander, U.S. Naval Forces Europe, Commander, Allied Joint Force Command, and the 32nd Vice Chief of Naval Operations. Since 2012, Admiral Mullen has served as President of MGM Consulting LLC and is the Charles and Marie Robertson Visiting Professor at the Woodrow Wilson School of Public and International Affairs at Princeton University.
Admiral Mullen is also a director at Sprint Corporation.