Jan. 20, 2018 Mattis Issues Guidance as Federal Government Shuts Down The Defense Department will continue its mission to defend the people of the United States, American allies and U.S. vital interests around the world during the government shutdown, Defense Secretary James N. Mattis said in a memo.
Jan. 24, 2017 10 Things to Know About New DoD Secretary James Mattis Retired Marine Corps Gen. James N. Mattis has officially been confirmed as the new Secretary of Defense.