Riyadh Welcome Defense Secretary Dr. Mark T. Esper is greeted by Saudi Vice Defense Minister Prince Khalid bin Salman after arriving in Saudi Arabia, Oct. 21, 2019. SHARE: Download: Full Size (3.19 MB) Tags: defense secretary, esper Credit: Army Staff Sgt. Brandy Nicole Mejia VIRIN: 191021-D-AP390-4045Y.JPG Photo Gallery