Secretary's Departure Defense Secretary Dr. Mark T. Esper exchanges greetings with an airman at Joint Base Andrews, Md., Oct. 3, 2019, as he departs for a trip to Ohio and Kentucky. SHARE: Download: Full Size (1.08 MB) Tags: Defense Secretary , Esper Credit: Lisa Ferdinando, DOD VIRIN: 191003-D-BN624-0076C.JPG Photo Gallery