SCHRIEVER AIR FORCE BASE, Colo. -- U.S. Space Command Commander, Army Gen. James Dickinson (left), and Joint Task Force-Space Defense Commander, Army Brig. Gen. Thomas James (right), escort honorable Christopher C. Miller, acting Secretary of Defense, to the National Space Defense Center for combatant command mission discussions at Schriever Air Force Base, Colorado, Jan. 13, 2021. Miller and the Senior Enlisted Advisor to the Chairman of the Joint Chiefs of Staff Ramón “CZ” Colón-López, recognized several JTF-SD and Delta 9 members for their efforts in executing those missions. (U.S. Space Force Photo/Kathryn Damon)