Milley Meeting Army Gen. Mark A. Milley, the chairman of the Joint Chiefs of Staff, is greeted by NATO Secretary General Jens Stoltenberg at the alliance’s headquarters in Brussels, Jan. 14, 2020. Milley is attending his first meeting of the NATO Military Committee. SHARE IMAGE: Download Image: Full Size (0.17 MB) Photo By: NATO VIRIN: 200114-O-ZZ999-1147.JPG Photo Gallery