Miami Arrival Defense Secretary Jim Mattis and Army Command Sgt. Maj. John Troxell, senior enlisted advisor to the chairman of the Joint Chiefs of Staff, arrive in Miami, Oct. 12, 2017. DoD photo by Army Sgt. Amber I. Smith SHARE: Download: Full Size (1.19 MB) Credit: Amber I. Smith VIRIN: 171012-D-SV709-307Y.JPG Photo Gallery