July 17, 2026 First Guardians in part-time work roles join the Space Force The Space Force integrated 18 space-experienced Air Force Reservists into part-time Guardian roles, marking the first time Guardians will serve on non-sustained duty as part of a new single-component service structure.
Sept. 2, 2025 Space Force to accept Air Force Reserve volunteers for part-time positions Air Force Reservists in space-related career fields interested in volunteering to join the U.S. Space Force as Guardians serving in a part-time capacity can apply.