The United States Secretary of War Pete Hegseth has fired the President Trump appointed Navy Chief of Staff Jon Harrison from his role on Friday, October 3, 2025. The Department of War announced in a statement, “Jon Harrison will no longer serve as Chief of Staff to the Secretary of Navy. We are grateful for his service to the department.”He was fired over sweeping changes in Navy’s policy and budgeting divisions. Harrison and Navy Secretary John Phelan’s sweeping changes to policy and budgeting could be behind Hegseth’s move. Cao was nominated by President Trump.