Command Master Chief Jason Dunn, a native of Columbus, Ohio, entered the Navy in 1991, attending basic training at Recruit Training Command, Great Lakes, Illinois. He began his career in combat systems as a Fire Controlman, completing both “A” School and Tomahawk “C” School in San Diego, California.

At sea, he held leadership roles as Tomahawk LPO and acting LCPO aboard USS FIFE (DD 991) and USS JOHN S. MCCAIN (DDG 56). Promoted to Chief while assigned to COMSEVENTHFLT aboard USS BLUE RIDGE (LCC 19), he supported fleet coordination efforts across the theater, ensuring forward deployed forces remained mission-ready. Onboard USS RUSSELL (DDG 59), he served as DLCPO of Weapons Department and earned his SUWC, AAWC, CSC, and TAO qualifications. As Command Senior Enlisted Leader at Afloat Training Group MIDPAC and later at STRATCOM Cruise Missile Support Activity, Dunn helped shape tactical proficiency, combat systems training, and global strike support reinforcing readiness from the classroom to the combat zone.

In 2013, he was selected to serve as a Command Master Chief and was hand-picked to stand up the first CMC billet in COMDESRON FIFTEEN. He embarked aboard USS GEORGE WASHINGTON (CVN 73) guiding the staff through a complex hull swap to USS RONALD REAGAN (CVN 76). As Command Master Chief of USS CHANCELLORSVILLE (CG 62) beginning in 2015, he helped drive the ship to earn the Spokane Trophy, recognizing it as one of the most combat-ready ships in COMPACFLT.

In 2018, he assumed the role as Commander Master Chief at Naval Base San Diego, where his leadership helped earn the installation both the DoD Installation Award and the Presidential Award for Installation Excellence in 2019. He continued serving in senior enlisted roles focused on readiness and support to the fleet, first as Region Command Master Chief for Navy Region Northwest beginning in 2020, and then as CNIC Force Master Chief in 2022, where he advised on global shore readiness, infrastructure sustainment, and quality of service. In May 2024, Dunn was selected to be the OPNAV Command Master Chief, supporting the Navy’s Echelon I staff and subsequently assumed duties as the first Command Master Chief of OPNAV N4 in January 2025.

Command Master Chief Dunn is an Honor Graduate of the U.S. Air Force Senior Non-Commissioned Officer Academy (Class 2011-A, Flight 02) and holds a bachelor’s degree in information systems management from Wayland Baptist University.