Defense Secretary Jim Mattis speaks with United States Forces Korea and Republic of Korea air force leaders at Osan Air Base, Republic of Korea, Feb. 2, 2017. A goal of Mattis’ visit to the ROK was to showcase what warm, respectful and mutually supportive relations between democracies can accomplish when guided by a spirit of collaboration in support of peace and prosperity. (U.S. Air Force photo by Staff Sgt. Victor J. Caputo)