Shanahan Greeting Acting Defense Secretary Patrick M. Shanahan is greeted by Air Force Gen. John E. Hyten, commander of U.S. Strategic Command, after arriving for the 35th Space Symposium in Colorado Springs, Colo., April 8, 2019. SHARE IMAGE: Download Image: Full Size (0.62 MB) Tags: Shanahan, Space, Strategic Command, Hyten, Acting Defense Secretary Photo By: Lisa Ferdinando, DOD VIRIN: 190408-D-BN624-0049A.JPG Photo Gallery