Reporters' Briefing Defense Secretary Jim Mattis, center, briefs reporters while flying over the Atlantic Ocean en route to Brussels for a NATO Defense Ministerial, Feb. 14, 2017. DoD photo by Air Force Tech. Sgt. Brigitte N. Brantley SHARE: Download: Full Size (0.85 MB) Credit: Brigitte N. Brantley VIRIN: 170214-D-GO396-0075A.JPG Photo Gallery