Testimony Prep Defense Secretary James N. Mattis and Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, prepare to testify on the Defense Department's fiscal year 2019 budget request before the House Armed Services Committee in Washington, April 12, 2018. DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro SHARE: Download: Full Size (1.57 MB) Credit: Dominique A. Pineiro VIRIN: 180412-D-PB383-012.JPG Photo Gallery