was officially sworn in as chief of space operations by Vice President Mike Pence. On 20 December, its first organizational change occurred when Secretary of the Air Force Barbara Barrett designated Air Force Space Command's Fourteenth Air Force as Space Operations Command. All of Air Force Space Command's 16,000 active duty and civilian personnel were assigned to the new service. Major organizational changes during the first year included replacing its space wings and operations groups with deltas and garrisons on 24 July 2020 and announcing its field command structure, merging wings and groups into deltas and numbered air forces and major commands into field commands. Space Delta 2 became the space domain awareness delta, replacing the 21st Operations Group; Space Delta 3 became the space electronic warfare delta, replacing the 721st Operations Group; Space Delta 4 became the missile warning delta, replacing 460th Operations Group and absorbing the ground-based missile warning radars of the 21st Operations Group; Space Delta 5 became the command and control delta, replacing the 614th Air Operations Center; Space Delta 6 became the cyberspace operations delta, replacing the 50th Network Operations Group; Space Delta 7 became the intelligence, surveillance, and reconnaissance delta, replacing Air Combat Command's 544th Intelligence, Surveillance and Reconnaissance Group; Space Delta 8 became the satellite communication and navigation warfare delta, replacing the 50th Operations Group; Space Delta 9 became the orbital warfare delta, replacing the 750th Operations Group; the Peterson-Schriever Garrison became responsible for the base administration of Peterson Air Force Base, Schriever Air Force Base, Cheyenne Mountain Air Force Station, Thule Air Base, New Boston Air Force Station, and Kaena Point Satellite Tracking Station, replacing the 21st Space Wing and the 50th Space Wing; the Buckley Garrison became responsible for the base administration of Buckley Air Force Base, Cape Cod Air Force Station, Cavalier Air Force Station, and Clear Air Force Station, replacing the 460th Space Wing. On 21 October 2020, Space Operations Command was established as its first field command, replacing headquarters Air Force Space Command. The first Space Operations Command (redesignated Fourteenth Air Force) was redesignated back to Fourteenth Air Force, inactivated on 21 October 2020 and return to the United States Air Force. On the same day, a newly created Space Operations Command-West, was activated. On 3 April 2020, Chief Master Sergeant Roger A. Towberman, formerly command chief of Air Force Space Command, transferred to the Space Force as