Defense Testimony Defense Secretary Dr. Mark T. Esper and Army Gen. Mark A. Milley, chairman of the Joint Chiefs of Staff, testify at a House Armed Service Committee hearing on Syria and Middle East policy in Washington, Dec. 11, 2019. SHARE IMAGE: Download Image: Full Size (1.28 MB) Tags: Milley, Chairman, Defense Secretary, Esper Photo By: Army Sgt. 1st Class Chuck Burden VIRIN: 191211-D-HD608-0008.JPG Photo Gallery