Secretary Meeting Defense Secretary James N. Mattis meets with U.S. Ambassador to Vietnam Dan J. Kritenbrink upon arriving in Hanoi, Vietnam, on Jan. 24, 2018. DoD photo by Army Sgt. Amber I. Smith SHARE IMAGE: Download Image: Full Size (1.19 MB) Photo By: Amber I. Smith VIRIN: 180124-D-SV709-0538C.JPG Photo Gallery