Provide Testimony Defense Secretary Jim Mattis and Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, provide testimony on the fiscal 2018 Defense Department budget request to members of the Senate Appropriations Committee's defense subcommittee, June 14, 2017. DoD photo by Navy Petty Officer 2nd Class Dominique A. Pineiro SHARE: Download: Full Size (0.7 MB) Tags: marines, usmc, iraq, chairman, joint staff, isil, secdef, general dunford, joseph f. dunford, 19th cjcs, fiscal year, joseph f. dunford jr., syria, armed forces, 2018, fy2018, joe dunford, budget, marine corps Credit: Petty Officer 2nd Class Dominique A. Pineiro VIRIN: 170614-D-PB383-005.JPG Photo Gallery