Northcom Visit Acting Defense Secretary Chris Miller walks with the commander of North American Aerospace Defense Command and U.S. Northern Command, Air Force Gen. Glen VanHerck, at Northcom headquarters, Peterson Air Force Base, Colo., Jan. 14, 2021. SHARE IMAGE: Download Image: Full Size (1.01 MB) Tags: Miller, Northern Command, Acting Defense Secretary Photo By: Lisa Ferdinando, DOD VIRIN: 210114-D-BN624-0052.JPG Photo Gallery