Player Embed Code: <iframe width='500' height='300' scrolling='no' frameborder='0' style='border: none; overflow: hidden; width: 500px; height: 300px;' allowtransparency='true' src='https://www.dvidshub.net/video/embed/761967'></iframe> Download Embed Share Defense Secretary Hosts Change of Responsibility Ceremony Defense.gov Aug. 3, 2020 | 34:28 Defense Secretary Dr. Mark T. Esper presides as Army Lt. Gen. Daniel R. Hokanson, director of the Army National Guard, is promoted to general and takes over as 29th National Guard Bureau chief during ceremonies at Joint Base Myer-Henderson Hall, Va., Aug. 3, 2020. Hokanson succeeds Air Force Gen. Joseph L. Lengyel, who has served as NGB chief since August 2016.