The Cheyenne Mountain Complex is a United States Space Force installation and defensive bunker located in unincorporated El Paso County, Colorado, next to the city of Colorado Springs, at the Cheyenne Mountain Space Force Station, which hosts the activities of several tenant units. Also located in Colorado Springs is Peterson Space Force Base, where the North American Aerospace Defense Command (NORAD) and United States Northern Command (USNORTHCOM) headquarters are located.
PAVE PAWS is a complex Cold War early warning radar and computer system developed in 1980 to "detect and characterize a sea-launched ballistic missile attack against the United States". The first solid-state phased array deployed used a pair of Raytheon AN/FPS-115 phased array radar sets at each site to cover an azimuth angle of 240 degrees. Two sites were deployed in 1980 at the periphery of the contiguous United States, then two more in 1987–95 as part of the United States Space Surveillance Network. One system was sold to Taiwan and is still in service.
The United States Space Force's 10th Space Warning Squadron, is a missile warning unit located at Cavalier Space Force Station, North Dakota operating the AN/FPQ-16 Perimeter Acquisition Radar Attack Characterization System.
Aerospace Defense Command was a major command of the United States Air Force, responsible for air defense of the continental United States. It was activated in 1968 and disbanded in 1980. Its predecessor, Air Defense Command, was established in 1946, briefly inactivated in 1950, reactivated in 1951, and then redesignated Aerospace rather than Air in 1968. Its mission was to provide air defense of the Continental United States (CONUS). It directly controlled all active measures, and was tasked to coordinate all passive means of air defense.
The 21st Wing is an inactive wing of the United States Air Force.
The 21st Air Division is an inactive United States Air Force organization. Its last assignment was with Tactical Air Command, being stationed at Griffiss Air Force Base, New York. It was inactivated on 23 September 1983.
The 20th Space Surveillance Squadron is a Space Delta 2 unit located at Eglin Air Force Base, Florida with the mission to execute multiplatform, tactical space warfighting domain characterization, recognition, and responsiveness to achieve 21st Space Wing and United States Space Command intent. The unit, formerly designated the 20th Space Control Squadron, was renamed on 25 March 2022.
The 13th Space Warning Squadron (13SWS) is a missile warning unit assigned to the United States Space Force and located at Clear Space Force Station 5 miles (8 km) south of Anderson, Alaska
Eldorado Air Force Station located 35 miles (56 km) south of San Angelo, Texas was one of the four unique AN/FPS-115 PAVE PAWS, early-warning phased-array radar systems. The 8th Space Warning Squadron, 21st Space Wing, Air Force Space Command operated at Eldorado Air Force Station.
The 16th Electromagnetic Warfare Squadron is an active United States Space Force unit, stationed at Peterson Space Force Base, Colorado as part of the Space Delta 3. The squadron protects critical satellite communication links to detect, characterize, geolocate and report sources of electromagnetic interference on US military and commercial satellites. The squadron also provides combat-ready crews to deploy and employ defensive space electromagnetic warfare capabilities for theater combatant commanders. The squadron is Air Force Space Command's first defensive counterspace unit.
Cape Cod Space Force Station is a United States Space Force station located in the northwest corner of Joint Base Cape Cod, United States, on Flatrock Hill in Bourne, Massachusetts. Cape Cod Space Force Station began construction in 1976 as Cape Cod Missile Early Warning Station and was renamed Cape Cod Air Force Station in 1982, before assuming its current name in 2021.
The 1st Space Operations Squadron is a United States Space Force unit responsible for space-based space domain awareness. Located at Schriever Space Force Base, Colorado, the squadron operates the Space Based Space Surveillance system, the Advanced Technology Risk Reduction system, the Operationally Responsive Space-5 satellite, and the Geosynchronous Space Situational Awareness Program.
The 11th Space Warning Squadron is a United States Space Force missile warning squadron, located at Buckley Space Force Base, Colorado.
The 7th Space Warning Squadron (SWS) is the premier Space Domain Awareness sensor on the West Coast. The unit was originally established to guard the U.S. West Coast against sea-launched ballistic missiles from the eastern outskirts of Beale Air Force Base approximately 8 miles (13 km) east of Marysville, California. 7 SWS is a geographically separated unit of Space Delta 4.
The 12th Space Warning Squadron is a United States Space Force ground-based radar used for missile warning, missile defense, and space situation awareness, stationed at Pituffik Space Base, Greenland.
The United States Space Force's 5th Space Warning Squadron is a missile warning unit located at Buckley Space Force Base, Colorado.
The United States Air Force's 9th Space Warning Squadron was a United States Air Force missile warning unit located at Robins AFB, Georgia.
The 213th Space Warning Squadron of the Alaska Air National Guard provides early warning of Intercontinental ballistic missiles and Submarine-launched ballistic missiles to the Missile Correlation Center of North American Aerospace Defense Command. The squadron is a geographically separated unit assigned to the 168th Wing at Eielson Air Force Base.
Cheyenne Mountain Space Force Station (CMSFS) is located in Cheyenne Mountain on the Front Range of the Rocky Mountains in unincorporated El Paso County, Colorado, next to Colorado Springs, The Cheyenne Mountain Complex, an underground facility within Cheyenne Mountain SFS, was first built for the North American Aerospace Defense Command (NORAD) Combat Operations Center, though NORAD moved day-to-day operations to its headquarters on Peterson AFB in 2006. However, day-to-day operations were moved back in 2011 after a major overhaul and renovation.
The Missile Warning Center (MWC) is a center that provides missile warning and defense for United States Space Command's Combined Force Space Component Command, incorporating both space-based and terrestrial sensors. The MWC is located at Cheyenne Mountain Space Force Station.
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United States Space Force 
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