Symposium Speech Acting Defense Secretary Patrick M. Shanahan delivers remarks at the 35th Space Symposium in Colorado Springs, Colo., April 9, 2019. SHARE IMAGE: Download Image: Full Size (1.4 MB) Tags: Shanahan, Space, Acting Defense Secretary Photo By: Lisa Ferdinando, DOD VIRIN: 190409-D-BN624-0143A.JPG Photo Gallery