Taking Steps Acting Defense Secretary Dr. Mark T. Esper meets with Qatar's Emir Sheikh Tamim bin Hamad Al Thani at the Pentagon, July 8, 2019. SHARE: Download: Full Size (2.91 MB) Tags: partnerships, acting defense secretary, esper Credit: Army Sgt. Amber I. Smith, DOD VIRIN: 190708-D-SV709-0286Q.JPG Photo Gallery