3rd Combat Training Squadron This is the official emblem of 3rd Combat Training Squadron. Photo Details / Download Hi-Res The squadron is assigned to Space Delta 3 - Space Electromagnetic Warfare, located at Peterson Space Force Base, Colorado. Mission The 3rd CTS develops and trains combat relevant electromagnetic warfare professionals. History The unit initially activated as the 721st Operations Support Squadron, a unit within the 721st Operations Group, at the 21st Space Wing. The 721st OG was originally activated Oct. 10, 2019, during a ceremony at Peterson Air Force Base, Colorado. The 721st OG was re-designated the Space Delta 3 - Space Electronic Warfare during a ceremony on July 24, 2020, at Peterson AFB, Colorado. On July 26, 2021, Peterson AFB was renamed to Peterson Space Force Base. On Sept. 21, 2021, DEL 3 was cleared to change their name to Space Delta 3 - Space Electromagnetic Warfare. On March 3, 2022, the 721st OSS was re-designated the 3rd Combat Training Squadron, remaining within Space Delta 3 at Peterson SFB, Colorado. (Current as of April 2024)