Retirement Remarks Defense Secretary Ash Carter and Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, provide remarks at the retirement ceremony for Air Force Chief of Staff Gen. Mark A. Welsh III at Andrews Air Force Base, Md. SHARE: Download: Full Size (0.41 MB) Tags: Chairman, SecDef, ASH Carter, Air Force, Joe Dunford Credit: DoD Graphic VIRIN: 160623-D-XT155-006.JPG Photo Gallery