Pentagon Briefing Secretary of Defense Lloyd J. Austin III and Army Gen. Mark A. Milley, chairman of the Joint Chiefs of Staff, brief the media at the Pentagon, Aug. 18, 2021. SHARE: Download: Full Size (1.49 MB) Tags: Chairman, Milley, Austin, Defense Secretary, afghanistan Credit: Lisa Ferdinando, DOD VIRIN: 210818-D-BN624-0004.JPG Photo Gallery