Commander Dunn is a native of Muskogee, Oklahoma. He enlisted in the Navy in 1989. In December 1989 he completed recruit training and OS A School and reported to the USS BELLEAU WOOD (LHA 3), San Diego, California as CIC Watch Supervisor. In November 1990, he served as CIC Watch Supervisor on USS NEW ORLEANS (LPH 11) in San Diego. From October 1994 to November 1997, he served as Air Intercept Controller at Tactical Air Control Squadron 12 Detachment, Westpac Alfa, Sasebo, Japan. There, he earned his Enlisted Surface/Air Warfare Specialist pins. In January 1998, he served at Commander Amphibious Group ONE, Okinawa, Japan as Schedules Officer.
On 1 January 2002, CDR Dunn was Commissioned as a 6120 Operations Technical Limited Duty Officer at a ceremony at White Beach, Okinawa. Since his commissioning, he has served as a Naval Officer at Naval Ocean Processing Facility, Virginia Beach, Virginia from March 2002 to March 2004 as Watch Officer/Training Officer and was IUSS qualified. In June 2004, he was the Combat Information Center Officer and Assistant Operations Officer onboard USS ARLEIGH BURKE (DDG 51) in Norfolk, Virginia. During this time, he was Surface Warfare Officer qualified. In June 2006, he was Surface Readiness Effectiveness Action Officer at Surface Warfare Development Group, Norfolk, Virginia.
CDR Dunn was onboard US CENTCOM as an Individual Augment as Watch Stander in March 2007. In April 2009, he was onboard USS BATAAN (LHD 5) as Assistant Operations Officer, Operations Officer and Tactical Actions Officer, Norfolk, Virginia. From there he was at Fleet Area Control and Surveillance Facility, Virginia Capes and Fleet Area Control and Fleet Forces Atlantic Exercise Coordination Center (FFAECC), Virginia Beach, Virginia as Operations Officer, Schedules Officer, Security Manager, and FFAECC Director. From August 2013 to February 2014, he attended Joint Interface Control Officer (JICO) School (MAGIC, Planner, JICO). In February 2014, he served at Center for Surface Combat Systems Unit Dam Neck, Virginia Beach, Virginia as AEGIS Ashore Team Trainer Program Manager. February 2016 he reported to Commander Undersea Surveillance, Virginia Beach, Virginia as Operations Officer.
CDR Dunn currently serves as Executive Officer onboard Surface Combat Systems Center, Wallops Island, Virginia.