United States Navy rear admiral who, in his last position, served as the Commander, United States Fourth Fleet.
Ashore, Guillory's assignments included a brief recruiting tour in his hometown of New Orleans and several Washington-area assignments including the Office of the Chief of Naval Operations as the Surface Warfare Division branch head for Combat Systems, and as the assistant deputy director for Surface Ships. He also served in the Joint Staff as the J-3, Current Readiness branch chief.
In December 2006, Guillory returned to Washington D.C. and the Office of the Chief of Naval Operations as the deputy director of Surface Warfare (OPNAV N86B). He assumed the duties as director of Surface Warfare in October 2007 and the responsibility for the warfighting requirements and resources for all surface combatant ships and combat systems. In June 2009, Guillory was selected to assume command of U.S. Naval Forces Southern Command/U.S. 4th Fleet.
Guillory is a graduate of the National Defense University (Industrial College of the Armed Forces) and he is also the 2009 recipient of the Black Engineer of the Year Award for Leadership.