Esper Greeting Defense Secretary Dr. Mark T. Esper shakes hands with airmen before leaving Joint Base Andrews, Md., for Stuttgart, Germany, Sept. 4, 2019. SHARE IMAGE: Download Image: Full Size (0.49 MB) Tags: Defense Secretary, Esper Photo By: Lisa Ferdinando, DOD VIRIN: 190904-D-BN624-0024A.JPG Photo Gallery