Mattis Remarks Defense Secretary James N. Mattis speaks with reporters during a flight to Muscat, Oman, March 11, 2018. DoD photo by Army Sgt. Amber I. Smith SHARE IMAGE: Download Image: Full Size (3.72 MB) Tags: Travels , James N. Mattis, SecDef Photo By: Amber I. Smith VIRIN: 180311-D-SV709-0008C.JPG Photo Gallery