NATO Pose Army Gen. Mark A. Milley, chairman of the Joint Chiefs of Staff, center, poses with U.S. service members and civilians who work at the NATO headquarters, following the NATO Military Committee meeting in Brussels, Jan. 15, 2020. SHARE: Download: Full Size (1.68 MB) Tags: Milley Credit: Army Sgt. 1st Class Chuck Burden, DOD VIRIN: 200115-D-HD608-3342.JPG Photo Gallery