PETERSON SPACE FORCE BASE, Colo. – U.S. Space Force Col. Jack D. Fulmer II, Space Delta 10 – Doctrine and Wargaming commander, passes the Delta 10 Operations Squadron guidon to U.S. Space Force Lt. Col. Jonisa A. McGlown, 10 DOS commander, during the activation ceremony at Peterson Space Force Base, Colorado, Sept. 30, 2021. There are currently four active duty Guardians and Airmen within 10 DOS. (U.S. Space Force photo by Staff Sgt. Matthew Coleman-Foster)