Leader Briefing Defense Secretary Dr. Mark T. Esper and Army Gen. Mark A. Milley, chairman of the Joint Chiefs of Staff, host a news briefing at the Pentagon on Defense Department support to COVID-19 response efforts, April 14, 2020. SHARE IMAGE: Download Image: Full Size (2.85 MB) Tags: defense secretary, chairman, esper, milley Photo By: Marvin Lynchard, DOD VIRIN: 200414-D-FW736-3003Y.JPG Photo Gallery