Defense Secretary James N. Mattis and Marine Corps Gen. Joseph F. Dunford Jr., chairman of the Joint Chiefs of Staff, provide testimony on the Fiscal Year 2018 National Defense Authorization Budget Request from the Department of Defense to members of the House Armed Services Committee at the Rayburn House Office Building in Washington D.C., June 12, 2017. (Dept. of Defense Photo by Navy Petty Officer 2nd Class Dominique A. Pineiro)