Defense Discussion Defense Secretary Dr. Mark T. Esper speaks with Army Gen. Mark A. Milley, the chairman of the Joint Chiefs of Staff, during the 51st annual U.S.-South Korean Security Consultative Meeting in Seoul, South Korea, Nov. 15, 2019. SHARE IMAGE: Download Image: Full Size (1.83 MB) Photo By: Navy Petty Officer 1st Class Dominique A. Pineiro, DOD VIRIN: 191115-D-PB383-010.JPG Photo Gallery