Vietnam Arrival Defense Secretary James N. Mattis meets with U.S. Ambassador to Vietnam Dan J. Kritenbrink upon arriving in Hanoi, Vietnam, Jan. 24, 2018. DoD photo by Army Sgt. Amber I. Smith SHARE: Download: Full Size (1.73 MB) Tags: Pacific Command, SecDef, Travels, Pacom, James N. Mattis, Indo-Pacific Credit: Amber I. Smith VIRIN: 180124-D-SV709-0521C.JPG Photo Gallery