Esper Address 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. SHARE IMAGE: Download Image: Full Size (11.78 MB) Tags: Defense Secretary , Esper Photo By: Air Force Staff Sgt. Jackie Sanders, DOD VIRIN: 200803-D-XI929-1608.JPG Photo Gallery