NATO Meeting Defense Secretary James N. Mattis meets with NATO Secretary General Jens Stoltenberg at NATO headquarters in Brussels, June 7, 2018. DoD photo by Air Force Tech Sgt. Vernon Young Jr. SHARE IMAGE: Download Image: Full Size (0.66 MB) Tags: NATO, Defense Secretary James N. Mattis Photo By: Tech Sgt. Vernon Young Jr. VIRIN: 180607-D-IO684-050.JPG Photo Gallery