Town Hall Defense Secretary Jim Mattis speaks during a town hall at U.S. Northern Command headquarters in Colorado Springs, Colo., Nov. 16, 2017. DoD photo by Army Sgt. Amber I. Smith SHARE IMAGE: Download Image: Full Size (1.86 MB) Tags: Travels , JIm Mattis, Defense Secretary , Northcom, Northern Command Photo By: Sgt. Amber I. Smith VIRIN: 171116-D-SV709-0214.JPG Photo Gallery