Mattis Speech Defense Secretary James N. Mattis announces the National Defense Strategy at Johns Hopkins University School of Advanced International Studies in Washington, D.C., Jan. 19, 2018. DoD photo by Navy Petty Officer 1st Class Kathryn E. Holm SHARE IMAGE: Download Image: Full Size (1.79 MB) Photo By: Navy Petty Officer 1st Class Kathryn E. Holm VIRIN: 180119-D-SH953-0038A.JPG Photo Gallery