Esper and Milley Defense Secretary Dr. Mark T. Esper and Chairman of the Joint Chiefs of Staff Army Gen. Mark A. Milley conduct a news conference at the Pentagon, Oct. 28, 2019. SHARE IMAGE: Download Image: Full Size (1.37 MB) Tags: Milley, Defense Secretary , Chairman, Esper Photo By: Navy Petty Officer 2nd Class James K. Lee, DOD VIRIN: 191028-D-WA993-0017.JPG Photo Gallery