Leadership Gathering Defense Secretary Jim Mattis speaks with U.S. military and NATO leaders during a visit to the Resolute Support headquarters in Kabul, Afghanistan, Sept. 27, 2017. DoD photo by Air Force Staff Sgt. Jette Carr SHARE: Download: Full Size (0.5 MB) Credit: Staff Sgt. Jette Carr VIRIN: 170927-D-GY869-0225.JPG Photo Gallery