Secretary Presents Defense Secretary James N. Mattis presents the citation for the Department of Defense Medal for Distinguished Public Service to House Speaker Paul Ryan in a Pentagon ceremony, Nov. 28, 2018. DOD photo by David Vergun SHARE IMAGE: Download Image: Full Size (0.1 MB) Tags: Defense Secretary James N. Mattis Photo By: David Vergun VIRIN: 181128-D-UB488-001.JPG Photo Gallery