Player Embed Code: Download Embed Share Brown Succeeds Goldfein as Air Force Chief of Staff Defense.gov Aug. 6, 2020 | 01:21:45 Defense Secretary Dr. Mark T. Esper speaks at a ceremony in which Air Force Gen. Charles Q. Brown Jr. succeeds Air Force Gen. David L. Goldfein as the Air Force chief of staff at Joint Base Andrews, Md., Aug. 6, 2020.