NATO Arrival Defense Secretary Dr. Mark T. Esper and U.S. Ambassador to NATO Kay Bailey Hutchison arrive for meetings at NATO headquarters in Brussels, Feb. 12, 2020. SHARE IMAGE: Download Image: Full Size (3.68 MB) Tags: NATO, Partnerships, Defense Secretary, Esper Photo By: Army Staff Sgt. Brandy Nicole Mejia VIRIN: 200212-D-AP390-1031A.JPG Photo Gallery