Hesseth removes top Pentagon planning official US Secretary of War Pete Hesseth has fired General Brett Sylvia, the top strategic planning official for the US Joint Chiefs of Staff. Sylvia, who was responsible for strategic planning, program development and policy formulation on the US Joint Chiefs of Staff, known as J5, was abruptly relieved of his duties. A spokesman for General Dan Kane, chairman of the US Joint Chiefs of Staff, confirmed that Silvas is leaving his post. According to the report, the reason for Silvas' dismissal was not published, and it is not yet clear who will replace him in the position.