Fireside Chat Defense Secretary James N. Mattis speaks with Ambassador William J. Burns and guests during a fireside chat at the Carnegie Endowment for International Peace, Washington, D.C., Jan. 29, 2018. DoD photo by Tech Sgt. Vernon Young Jr. SHARE: Download: Full Size (0.63 MB) Credit: Tech Sgt. Vernon Young Jr. VIRIN: 180130-D-HG842-0004.JPG Photo Gallery