Centcom Visit Defense Secretary Jim Mattis and Army Command Sgt. Maj. John Troxell, senior enlisted advisor to the chairman of the Joint Chiefs of Staff, visit U.S. Central Command at MacDill Air Force Base in Tampa, Fla., Oct. 12, 2017. DoD photo by Army Sgt. Amber I. Smith SHARE: Download: Full Size (1.27 MB) Credit: Amber I. Smith VIRIN: 171012-D-SV709-025Y.JPG Photo Gallery