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The Cheyenne Mountain Complex is a
United States Space Force The United States Space Force (USSF) is the space force branch of the United States Department of Defense. It is one of the six United States Armed Forces, armed forces of the United States and one of the eight uniformed services of the Unite ...
installation and defensive bunker located in unincorporated
El Paso County, Colorado El Paso County is the List of counties in Colorado, most populous county in the U.S state of Colorado. As of the 2020 United States census, 2020 census, the population was 730,395, surpassing the city and county of Denver. The county seat is ...
, next to the city of
Colorado Springs Colorado Springs is the most populous city in El Paso County, Colorado, United States, and its county seat. The city had a population of 478,961 at the 2020 census, a 15.02% increase since 2010. Colorado Springs is the second-most populous c ...
, at the
Cheyenne Mountain Space Force Station 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 facili ...
, which hosts the activities of several tenant units. Also located in Colorado Springs is
Peterson Space Force Base Peterson Space Force Base, previously Peterson Air Force Base, Peterson Field, and Army Air Base, Colorado Springs, is a United States Space Force base that shares an airfield with the adjacent Colorado Springs Municipal Airport and is home to ...
, where the
North American Aerospace Defense Command North American Aerospace Defense Command (NORAD ; , CDAAN), known until March 1981 as the North American Air Defense Command, is a Combined operations, combined organization of the United States and Canada that provides aerospace warning, air ...
(NORAD) and
United States Northern Command The United States Northern Command (USNORTHCOM) is one of eleven unified combatant commands of the United States Department of Defense. The command is tasked with providing military support for Civil authority, non-military authorities in t ...
(USNORTHCOM) headquarters are located. Formerly the center for the
United States Space Command United States Space Command (USSPACECOM or SPACECOM) is a unified combatant command of the United States Department of Defense, responsible for military operations in outer space, specifically all operations 100 kilometers (62 miles) and greater ...
(USSC) and NORAD, the Complex monitored the airspace of Canada and the United States for missiles, space systems, and foreign aircraft through its worldwide early-warning system. Since 2008, NORAD and the USSC have been based at
Peterson Space Force Base Peterson Space Force Base, previously Peterson Air Force Base, Peterson Field, and Army Air Base, Colorado Springs, is a United States Space Force base that shares an airfield with the adjacent Colorado Springs Municipal Airport and is home to ...
and the complex, re-designated as an
Air Force An air force in the broadest sense is the national military branch that primarily conducts aerial warfare. More specifically, it is the branch of a nation's armed services that is responsible for aerial warfare as distinct from an army aviati ...
station, is used for crew training and as a back-up command center if required. The military complex has included, in the past, many units of NORAD, USSC,
Aerospace Defense Command 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 establishe ...
(ADCOM),
Air Force Systems Command The Air Force Systems Command (AFSC) is an inactive United States Air Force Major Command. It was established in April 1951, being split off from Air Materiel Command. The mission of AFSC was Research and Development for new weapons systems. AFS ...
, Air Weather Service, and the
Federal Emergency Management Agency The Federal Emergency Management Agency (FEMA) is an agency of the United States Department of Homeland Security (DHS), initially created under President Jimmy Carter by Presidential Reorganization Plan No. 3 of 1978 and implemented by two Exec ...
(FEMA). The complex's communication center is also used by the nearby U.S.
Civil Defense Civil defense or civil protection is an effort to protect the citizens of a state (generally non-combatants) from human-made and natural disasters. It uses the principles of emergency management: Risk management, prevention, mitigation, prepara ...
Warning Center.


Facilities


Main chambers

The complex was built under 2,000 feet (610 metres) of granite on five acres (2 hectares). Fifteen three-story buildings are protected from movement, e.g., earthquake or explosion, by a system of giant springs that the buildings sit on and flexible pipe connectors to limit the operational effect of movement. A total of more than 1,000 springs are designed to prevent any of the 15 buildings from shifting more than one inch. The complex is the only underground
Department of Defense The United States Department of Defense (DoD, USDOD, or DOD) is an executive department of the U.S. federal government charged with coordinating and supervising the six U.S. armed services: the Army, Navy, Marines, Air Force, Space Force, ...
facility certified to be able to sustain a high-altitude
electromagnetic pulse An electromagnetic pulse (EMP), also referred to as a transient electromagnetic disturbance (TED), is a brief burst of electromagnetic energy. The origin of an EMP can be natural or artificial, and can occur as an electromagnetic field, as an ...
(HEMP). There are a large quantity of cots for most of the personnel, including suites for high-ranking officers within the bunker. Amenities include a medical facility, store, cafeteria, and fitness centers inside and outside the mountain.


Blast doors

The bunker is built to deflect a 30 megaton
nuclear explosion A nuclear explosion is an explosion that occurs as a result of the rapid release of energy from a high-speed nuclear reaction. The driving reaction may be nuclear fission or nuclear fusion or a multi-stage cascading combination of the two, th ...
as close as 1.2 miles (1.9 km). Within a mountain tunnel are sets of 25-ton blast doors and another for the civil engineering department. The doors were built so that they can always be opened when needed. Should a nuclear blast hit the building, they are designed to withstand a
blast wave In fluid dynamics, a blast wave is the increased pressure and flow resulting from the deposition of a large amount of energy in a small, very localised volume. The flow field can be approximated as a lead shock wave, followed by a similar subsonic ...
. A network of blast valves have unique filters that can capture airborne
chemical, biological, radiological, and nuclear Chemical, biological, radiological, and nuclear defense (CBRN defense) or Nuclear, biological, and chemical protection (NBC protection) is a class of protective measures taken in situations where chemical warfare, chemical, biological warfar ...
contaminants.


Outdoor

Outside of the military complex are the parking lots, a fire station, and outdoor recreational facilities. The recreational amenities include Mountain Man Park, picnic areas, a racquetball facility, softball field, sand volleyball court, basketball court, a putting green, and horseshoe area.


Support area

The complex has its own power plant, heating and cooling system, and water supply. The 21st Mission Support Group ensures there is a 99.999% degree of reliability of its electricity, water, air conditioning, power, and other support systems. The threats, in descending order of likelihood, that the complex may face are "medical emergencies, natural disasters, civil disorder, a conventional attack, an electromagnetic pulse attack, a cyber or information attack, chemical or biological or radiological attack, an improvised nuclear attack, a limited nuclear attack, nda general nuclear attack." The least likely events are the most hazardous. There is more water produced by mountain springs than the base requires, and a 1,500,000-gallon (5,700,000-litre) reservoir ensures that even in event of fire, there is enough water to meet the facility's needs. A reservoir of 4,500,000 gallons (17,000,000 litres) of water is used as a heat sink. There is a "massive" reservoir for diesel fuel and a "huge" battery bank with redundant power generators.


History


Construction and systems installation

The North American Air Defense Command (NORAD) was established and activated at the
Ent Air Force Base Ent Air Force Base was a United States Air Force base located in the Knob Hill neighborhood of Colorado Springs, Colorado. A tent city, established in 1943 during construction of the base, was initially commanded by Major General Uzal Girar ...
on September 12, 1957. The Command is a binational organization of Canadian (
1 Canadian Air Division 1 Canadian Air Division (1 Cdn Air Div) () is the operational-level command and control formation of the Royal Canadian Air Force (RCAF). Prior to 2006 the official abbreviation for the division was 1 CAD. It is commanded by an air force major-ge ...
) and United States air defense command units, in accordance with NORAD Agreements first made on May 12, 1958. In the late 1950s, a plan was developed to construct a command and control center in a hardened facility as a
Cold War The Cold War was a period of global Geopolitics, geopolitical rivalry between the United States (US) and the Soviet Union (USSR) and their respective allies, the capitalist Western Bloc and communist Eastern Bloc, which lasted from 1947 unt ...
defensive strategy against long-range Soviet bombers, ballistic missiles, and a nuclear attack. In 1957, the Strategic Air Command began construction in New England inside Bare Mountain for a hardened bunker to contain the command post for the
8th Air Force The Eighth Air Force (Air Forces Strategic) is a numbered air force (NAF) of the United States Air Force's Air Force Global Strike Command (AFGSC). It is headquartered at Barksdale Air Force Base, Louisiana. The command serves as Air Forces S ...
, which was located at nearby
Westover Air Force Base Westover may refer to: People *Al Westover (born 1954), American professional basketball player in Australia *Arthur Westover (1864–1935), Canadian sport shooter and 1908 Olympian *Charles Westover (1934–1990), better known as Del Shannon, Amer ...
,
Chicopee, Massachusetts Chicopee ( ) is a city located on the Connecticut River in Hampden County, Massachusetts, United States. At the 2020 United States census, 2020 census, the city had a population of 55,560, making it the second-largest city in western Massachuset ...
. This underground facility was nicknamed " The Notch" (or formally as the 8th AF "Post-Attack Command and Control System Facility, Hadley") and was hardened to protect it from the effects of a nearby
nuclear blast Nuclear Blast Records is a German record label with subsidiary, subsidiaries located in Germany, the United States and Brazil. It was founded in 1987 by Markus Staiger in Donzdorf. Originally releasing hardcore punk records, the label moved on ...
and designed so that the senior military staff could facilitate further military operations. Four years later, construction at Cheyenne Mountain was started to create a similar protection for the NORAD command post. Cheyenne Mountain was excavated under the supervision of the Army Corps of Engineers for the construction of the NORAD Combat Operations Center beginning on May 18, 1961, by Utah Construction & Mining Company. The Space Defense Center and the Combat Operations Center achieved full operational capability on February 6, 1967. The total cost was $142.4 million. Its systems included a command-and-control system developed by
Burroughs Corporation The Burroughs Corporation was a major American manufacturer of business equipment. The company was founded in 1886 as the American Arithmometer Company by William Seward Burroughs I, William Seward Burroughs. The company's history paralleled many ...
. The electronics and communications system centralized and automated the instantaneous (one-millionth of a second) evaluation of aerospace surveillance data. The
Space Defense Center The Space Defense Center (SDC) was a space operation center of the North American Aerospace Defense Command North American Aerospace Defense Command (NORAD ; , CDAAN), known until March 1981 as the North American Air Defense Command, is a ...
moved from
Ent AFB Ent Air Force Base was a United States Air Force base located in the Knob Hill neighborhood of Colorado Springs, Colorado. A tent city, established in 1943 during construction of the base, was initially commanded by Major General Uzal Girar ...
to the complex in 1965. The NORAD Combat Operations Center was fully operational April 20, 1966 and The Space Defense Command's 1st Aerospace Control Squadron moved to Cheyenne Mountain that month. The following systems or commands became operational between May and October, 1966: The NORAD Attack Warning System, Combat Operations Command, and Delta I computer system, which recorded and monitored every detected space system. By January 4, 1967, the National Civil Defense Warning Center was in the bunker.


Operations and improvements


Air Defense Command satellite systems

System Development Corporation System Development Corporation (SDC) was a computer software company based in Santa Monica, California. Initially created as a division of the RAND Corporation in December 1955 (under the name System Development Division) and established as an ind ...
updated Air Defense Command satellite information processing systems for $15,850,542 on January 19, 1973. The improvements were primarily to the Space Computational Center's displays and application software, which was updated to provide real-time positioning of orbiting space systems for the NORAD Combat Operation Center. The first phase, which established a system integrator and modernized the communications to a major data processing system, was completed in October 1972.


Ballistic Missile Defense Center

The Ballistic Missile Defense Center (BMDC) BW 1.2 release was installed in February 1974 in the Combat Operations Center, under the command of CONAD. The
Safeguard In international trade law, a safeguard is a restraint to protect home or national industries from foreign competition. In the World Trade Organization (WTO), a member may take a safeguard action, such as restricting imports of a product tempo ...
command and control system, operated by the commander, communicated warnings, observation data, and attack assessment to the Combat Operations Center. It was also designed to release nuclear weapons.


Combat Operations Center

By 1978, five operating centers and a command post resided within the NORAD Combat Operations Center. The Space Computational Center catalogued and tracked space objects. The Intelligence Center analyzed intelligence data. Data was consolidated and displayed in the Command Post by the System Center. The Weather Support Unit monitored local and global weather patterns. The NORAD Commander's wartime staff reported to the Battle Staff Support Center.


Space Defense Operations Center

The Space Defense Operations Center (SPADOC), established on October 1, 1979, consolidated United States Air Force satellite survivability, space surveillance, and US ASAT operations into one wartime space activities hub at the NORAD Cheyenne Mountain Complex. Space surveillance and missile warning functions were performed by the Core Processing Segment (CPS) using
Worldwide Military Command and Control System The Worldwide Military Command and Control System, or WWMCCS , was a military command and control system implemented for the United States Department of Defense. It was created in the days following the Cuban Missile Crisis. WWMCCS was a comple ...
's Honeywell H6080 computers at the SPADOC Computational Center (SCC) and NORAD Computer System (NCS). A third computer was operational backup for SCC or NCS. By 1981, the H6080 failed to meet the requirements for timely computations. SPADATS was deactivated about 1980, although some of its logic continued on in SPADOC systems.


Cheyenne Mountain Complex Improvements Program (427M)

NORAD had a series of warning and assessment systems that were not fully automated in the Cheyenne Mountain complex into the 1970s. In 1979, the Cheyenne Mountain Complex Improvements Program 427M system became fully operational. It was a consolidated Cheyenne Mountain Upgrade program for command center, space, ballistic missile, and space functions, developed using new software technology and designed for computers with large processing capacity. There were three major segments of the 427M system: the Communication System Segment (CSS), NORAD Computer System (NCS), and Space Computational Center (SCC). The 425L Command and Control System, Display Information Processor, Command Center Processing System, and other hardware were replaced by the NORAD Computer System (NCS). The new system was designed to centralize several databases, improve on-line display capabilities, and consolidate mission warning information processing and transmission. It was intended to have greater reliability and quicker early warning capability. The Command Center Processing System's original UNIVAC 1106, re-purposed for Mission Essential Back-up Capability (MEBU), was upgraded to the more robust UNIVAC 1100/42. The 427M system, intended to modernize systems and improve performance, was initially "wholly ineffective" and resulted in several failures of the
Worldwide Military Command and Control System The Worldwide Military Command and Control System, or WWMCCS , was a military command and control system implemented for the United States Department of Defense. It was created in the days following the Cuban Missile Crisis. WWMCCS was a comple ...
(WWMCCS) system. In 1979 and 1980, there were a few instances when false missile warnings were generated by the Cheyenne Mountain complex systems. For instance, a computer chip "went haywire" and issued false missile warnings, which raised the possibility that a nuclear war could be started accidentally, based upon incorrect data. Staff analyzed the data and found that the warnings were erroneous, and the systems were updated to identify false alarms. Gen. James V. Hartinger of the Air Force stated that "his primary responsibility is to provide Washington with what he calls 'timely, unambiguous, reliable warning' that a raid on North America has begun." He explained that there are about 6,700 messages generated on average each hour in 1979 and 1980 and all had been processed without error. An off-site testing facility was established in Colorado Springs by NORAD in late 1979 or early 1980 so that system changes could be tested off-line before they were moved into production. Following another failure in 1980, a bad computer chip was updated, and staff and commander processes were improved to better respond to warnings. The Cheyenne Mountain Upgrade (CMU) of November 1988, designed to consolidate five improvement programs, was not installed because it was not compatible with other systems at Cheyenne Mountain and it did not meet the defined specifications according to deficiencies identified during testing. The five improvement programs were the CCPDS Replacement (CCPDS-R), CSS Replacement (CSS-R), Granite Sentry upgrade, SCIS, and SPADOC 4. SPADOC 4 was for upgrading the SCC with primary and backup 3090-200J mainframes), and SPADOC 4 block A achieved
initial operating capability Initial operating capability or initial operational capability (IOC) is the state achieved when a capability is available in its minimum usefully deployable form. The term is often used in government or military procurement. The United States D ...
(IOC) in April 1989. The CSS-R "first element" achieved IOC on April 12, 1991; and the 427M system was replaced . The CSSR, SCIS, Granite Sentry, CCPDS-R, and their interfaces were tested in 1997. Testing of Granite Sentry
nuclear detonation A nuclear explosion is an explosion that occurs as a result of the rapid release of energy from a high-speed nuclear reaction. The driving reaction may be nuclear fission or nuclear fusion or a multi-stage cascading combination of the two, th ...
(NUDET) data processing system found it to be inadequate.


Joint Surveillance System

The
Joint Surveillance System The Joint Surveillance System (JSS) is a joint United States Air Force and Federal Aviation Administration system for the atmospheric air defense of North America. It replaced the Semi Automatic Ground Environment (SAGE) system in 1983. Overvie ...
(JSS), developed under an agreement with the Canadian government, became fully operational in seven Region Operations Control Centers (ROCCs) on December 23, 1983. The Joint Surveillance System was implemented to replace
Semi-Automatic Ground Environment The Semi-Automatic Ground Environment (SAGE) was a system of mainframe computer, large computers and associated computer network, networking equipment that coordinated data from many radar sites and processed it to produce a single unified image ...
(SAGE).


Survivable Communications Integration System

In 1986, Congress approved development of the Survivable Communications Integration System (SCIS) to communicate missile warning messages simultaneously over many forms of media, but it was subject to delays and cost overruns. By 1992, the project was estimated to be delayed to 1995 and cost projected to increase from $142 million to $234 million.


Other systems

By 1992, the U.S. Space Command Space Surveillance Center (SSC) was the data analysis and tracking center for
Baker-Nunn camera A Schmidt camera, also referred to as the Schmidt telescope, is a catadioptric Astrophotography, astrophotographic Optical telescope, telescope designed to provide wide Field of view, fields of view with limited Aberration in optical systems, abe ...
images and Cheyenne Mountain was connected to the
AN/URC-117 Ground Wave Emergency Network The Ground Wave Emergency Network (GWEN) was a US Air Force command and control communications system, deployed briefly between 1992 and 1994, intended for use by the United States government to facilitate military communications before, during a ...
(GWEN) communication site in
Pueblo, Colorado Pueblo ( ) is a List of municipalities in Colorado#Home rule municipality, home rule municipality that is the county seat of and the List of municipalities in Colorado, most populous municipality in Pueblo County, Colorado, United States. The ...
. By 1995, the AN/FPS-129 HAVE STARE (Globus II) radar in California had been upgraded to "relay data to Cheyenne Mountain", and by October 1995 the
1st Command and Control Squadron First most commonly refers to: * First, the ordinal form of the number 1 First or 1st may also refer to: Acronyms * Faint Images of the Radio Sky at Twenty-Centimeters, an astronomical survey carried out by the Very Large Array * Far Infrared a ...
(1CACS) in the bunker was providing space collision avoidance data to the Cheyenne Mountain Operations Center's space control center. In June 1993, the Cheyenne Mountain Complex Operations Center had the USSPACE and NORAD Command Center, NORAD Air Defense Operations Center (ADOC), NORAD/USSPACECOM Combined Intelligence Watch Center (CIWC), USSPACECOM Space Defense Operations Center (SPADOC), USSPACECOM Space Surveillance Center (SSC), AFSPACECOM Weather Operations Center, and the AFSPACECOM Systems Center within its facility. Plans to house the USSPACECOM and NORAD command centers in the same location began by July 1994. A $450 million upgrade was made to the missile warning center beginning in February 1995. The effort was part of a $1.7 billion renovation program for Cheyenne Mountain. 'Granite Sentry' was an improvement program for the complex. It aimed "to provide a Message Processing Subsystem and a Video Distribution Subsystem, and o upgradethe NORAD Computer System display capability and four major centers: (1) the Air Defense Operations Center, (2) the NORAD Command Center, (3) the Battle Staff Support Center, and (4) the Weather Support Unit." It was also to process and display "
nuclear detection Radiation monitoring involves the measurement of radiation dose or radionuclide contamination for reasons related to the assessment or control of exposure to radiation or radioactive substances, and the interpretation of the results. Environment ...
data provided from the Integrated Correlation and Display System." For $230 million the program was also to "replace display screens of the Attack Warning and Attack Assessment System." It was delayed from 1993 to 1996. Granite Sentry and other Cheyenne Mountain Upgrade interfaces were tested in 1997, and Granite Sentry's processing regarding "simulated ucleardetonation messages…injected into the
Defense Support Program The Defense Support Program (DSP) is a program of the United States Space Force that operated the reconnaissance satellites which form the principal component of the ''Satellite Early Warning System'' used by the United States. DSP satellite ...
Data Distribution Center asnot adequate...". The Combatant Commander's Integrated Command and Control System (CCIC2S) program began in 2000 with a
Lockheed Martin The Lockheed Martin Corporation is an American Arms industry, defense and aerospace manufacturer with worldwide interests. It was formed by the merger of Lockheed Corporation with Martin Marietta on March 15, 1995. It is headquartered in North ...
contract "to upgrade all of the mission systems within Cheyenne Mountain, which included the space surveillance systems" for delivery in 2006. The portion of CCIC2S modernizing "attack warning systems within Cheyenne Mountain as tocost more than $700 million from fiscal years 2000 to 2006", and the delayed CCIC2S upgrades for space surveillance were superseded by systems for the
Joint Space Operations Center The Combined Space Operations Center (CSpOC) is a U.S.–led multinational space operations center that provides command and control of space forces for the United States Space Command under the United States Space Force component field command ...
's Space C2 program and Integrated Space Situational Awareness program. By 2003, consoles for the Ground-Based Mid-Course Defense (GMD) had been contracted for Cheyenne Mountain, and the planned 18 month Cheyenne Mountain Realignment to move Command Center operations to Peterson AFB was complete by May 13, 2008. On August 3, 2011, a ribbon cutting was held for the January 2010 – June 30, 2011, Missile Warning Center renovation funded by USSTRATCOM. Over the years, the installation came to house elements of the North American Aerospace Defense Command (NORAD),
U.S. Strategic Command The United States Strategic Command (USSTRATCOM) is one of the eleven unified combatant commands in the United States Department of Defense. Headquartered at Offutt Air Force Base, Nebraska, USSTRATCOM is responsible for strategic nuclear ...
, U.S. Air Force Space Command and U.S. Northern Command (USNORTHCOM). Under what became known as the Cheyenne Mountain Operations Center (CMOC), several centers supported the NORAD missions of aerospace warning and aerospace control and provided warning of ballistic missile or air attacks against North America.


Peterson and Vandenberg Air Force Bases

On July 28, 2006, the Cheyenne Mountain Directorate was re-designated as the Cheyenne Mountain Division, with the mission to assist in establishing an integrated NORAD and USNORTHCOM Command Center within the headquarters building at
Peterson Air Force Base Peterson Space Force Base, previously Peterson Air Force Base, Peterson Field, and Army Air Base, Colorado Springs, is a United States Space Force base that shares an airfield with the adjacent Colorado Springs Municipal Airport and is home t ...
. The Unified Space Vault and the Space Control Center were moved from Cheyenne Mountain to the
Joint Space Operations Center The Combined Space Operations Center (CSpOC) is a U.S.–led multinational space operations center that provides command and control of space forces for the United States Space Command under the United States Space Force component field command ...
at
Vandenberg Air Force Base Vandenberg may refer to: * Vandenberg (surname), including a list of people with the name * USNS ''General Hoyt S. Vandenberg'' (T-AGM-10), transport ship in the United States Navy, sank as an artificial reef in Key West, Florida * Vandenberg S ...
about October 2007. In 2006, NORAD relocated to a basement in the Peterson No. 2 building at the nearby
Peterson AFB Peterson Space Force Base, previously Peterson Air Force Base, Peterson Field, and Army Air Base, Colorado Springs, is a United States Space Force base that shares an airfield with the adjacent Colorado Springs Municipal Airport and is home t ...
. Northern Command and Space Command and Canadian military defense partners relocated at Peterson. The Cheyenne Mountain complex is maintained by a skeleton crew and no longer operates on a
24/7 In commerce and industry, 24/7 or 24-7 service (usually pronounced "twenty-four seven") is service that is available at any time and usually, every day. An alternate orthography for the numerical part includes 24×7 (usually pronounced "twenty- ...
basis. The complex is on "warm standby", meaning it is only staffed when required. On the fiftieth anniversary of the NORAD agreement—May 12, 2008—the Command Center located within Cheyenne Mountain Complex was officially re-designated as the NORAD and USNORTHCOM Alternate Command Center. The Cheyenne Mountain Division of NORAD and USNORTHCOM was re-designated as the J36 branch within the NORAD and USNORTHCOM's Operations Directorates.


NORAD Alternate Command

Since 2002, the complex has been classed as Cheyenne Mountain Air Force Station and has been used in crew qualification training, while the former command function has been redesignated as the "NORAD and USNORTHCOM Alternate Command Center" since 2008 after all the original functions of the complex were removed to Peterson Air Force Base. The complex is maintained by the 21st Mission Support Group which provides support and maintenance for the 'NORAD/USNORTHCOM's training, exercise and alternate command center functions, U.S. Strategic Command's Missile Warning Center, Detachment 2 of the 17th Test Squadron, Air Force Technical Applications Center's research laboratory, the Defense Intelligence Agency's Western Continental United States Regional Service Center'.
Cheyenne Mountain Air Force Station 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 facili ...
is owned and operated by Air Force Space Command. NORAD and USNORTHCOM now use just under 30% of the floor space within the complex and comprise approximately 5% of the daily population at Cheyenne Mountain. The Cheyenne Mountain Complex serves as NORAD and USNORTHCOM's Alternate Command Center and as a training site for crew qualification. Day-to-day crew operations for NORAD and USNORTHCOM typically take place at Peterson Air Force Base.


Migration of NORAD communications to Cheyenne Mountain

In early 2015, Admiral William E. Gortney, commander of NORAD and NORTHCOM, announced a $700 million contract with
Raytheon Raytheon is a business unit of RTX Corporation and is a major U.S. defense contractor and industrial corporation with manufacturing concentrations in weapons and military and commercial electronics. Founded in 1922, it merged in 2020 with Unite ...
to move systems into the complex to shield it from
electromagnetic pulse An electromagnetic pulse (EMP), also referred to as a transient electromagnetic disturbance (TED), is a brief burst of electromagnetic energy. The origin of an EMP can be natural or artificial, and can occur as an electromagnetic field, as an ...
attack, with additional work to be done at Vandenberg and Offutt. According to Gortney, "because of the very nature of the way that Cheyenne Mountain's built, it's EMP-hardened. And so, there's a lot of movement to put capability into Cheyenne Mountain and to be able to communicate in there".


Units

Electronic Systems Division Detachment 10 at
Ent AFB Ent Air Force Base was a United States Air Force base located in the Knob Hill neighborhood of Colorado Springs, Colorado. A tent city, established in 1943 during construction of the base, was initially commanded by Major General Uzal Girar ...
became the Cheyenne Mountain Complex Management Office (CMCMO) in 1963, the year the Chidlaw Combined Operations Center began operations; and on February 15, 1980, ESD Detachment 2 was established at the "Cheyenne Mountain Complex" (Det 2 became the AFSC focal point during the Cheyenne Mountain Upgrade.)
Aerospace Defense Command 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 establishe ...
organizations in the bunker became a specified command when the major command ended in 1980; e.g., the J31 unit of HQ NORAD/ADCOM subsequently staffed the Space Surveillance Center in the same room as the Missile Warning Center (separated by partitions). The "HQ Cheyenne Mountain Support Group ... was activated at the Cheyenne Mountain Complex" in October 1981 to support the Aerospace Defense Center's operation of the NORAD combat operations center". In 1983 the Foreign Technology Division had an operating location at the bunker and in 1992, an airman of the "1010th Civil Engineering Squadron at Cheyenne Mountain Air Force Base" developed a 3-D
AutoCAD AutoCAD is a 2D and 3D computer-aided design (CAD) software application developed by Autodesk. It was first released in December 1982 for the CP/M and IBM PC platforms as a desktop app running on microcomputers with internal graphics control ...
model of the bunker "to zoom in on a specific room". By 1995 a "missile operations section" supported the missile warning center, and in 2001 the 1989 1CACS at the Cheyenne Mountain Air Force Station was renamed the 1st Space Control Squadron. On June 24, 1994, when the " Joint Task Force – Cheyenne Mountain Operations organization was brought online to take responsibility for the installation", Brig. Gen. Donald Peterson was the commander of the JTF, which was renamed the " U.S. Space Command Cheyenne Mountain operations center" by March 1995. On July 28, 2006, the Cheyenne Mountain Realignment redesignated the Cheyenne Mountain Directorate to the Cheyenne Mountain Division. Circa 2004 the bunker included the 17th Test Squadron's Detachment 2 and AFTAC's research laboratory, (mirror website of webpage at www.cheyennemountain.af.mi

/ref> in 2008 Detachment 1 of the 392d Training Squadron operated the Cheyenne Mountain Training System (CMTS), and in 2011 the installation's 721st SFS was expanded.


In popular culture


Movies

* ''
WarGames ''WarGames'' is a 1983 American techno-thriller film directed by John Badham, written by Lawrence Lasker and Walter F. Parkes, and starring Matthew Broderick, Dabney Coleman, John Wood and Ally Sheedy. Broderick plays David Lightman, a ...
'' (1983) is set partly at the command center, where it was codenamed "Crystal Palace". * '' Interstellar'' (2014) has NASA's main command center within the bunker at Cheyenne Mountain.


Television

* In ''
Stargate SG-1 ''Stargate SG-1'' (often stylized in all caps, or abbreviated ''SG-1'') is a military science fiction Adventure fiction, adventure television series within Metro-Goldwyn-Mayer's Stargate, ''Stargate'' franchise. The show, created by Brad Wrig ...
'' and its spin-offs, Cheyenne Mountain houses "Stargate Command", a top-secret unit of the United States Air Force that uses the titular Stargate to explore
exoplanets An exoplanet or extrasolar planet is a planet outside the Solar System. The first confirmed detection of an exoplanet was in 1992 around a pulsar, and the first detection around a main-sequence star was in 1995. A different planet, first detec ...
. In recognition of the series' close relationship with the real-life Air Force, there is now a broom closet in the real Cheyenne Mountain Complex called "Stargate Command". * The bunker is also a setting in the series ''
Jeremiah Jeremiah ( – ), also called Jeremias, was one of the major prophets of the Hebrew Bible. According to Jewish tradition, Jeremiah authored the Book of Jeremiah, book that bears his name, the Books of Kings, and the Book of Lamentations, with t ...
''. * The base appears in
Episode 7 Episode Seven, Episode 7 or Episode VII may refer to: Film * '' Star Wars: The Force Awakens'' also known as ''Star Wars: Episode VII – The Force Awakens'', a 2015 film Television episodes * "Episode 7" (''All of Us Are Dead'') * ''Ashes to Ash ...
of the series ''
Mobile Suit Gundam Unicorn is a novel series written by Harutoshi Fukui with character and mechanical designs provided by Yoshikazu Yasuhiko and Hajime Katoki, respectively. It is first serialized in Kadokawa Shoten's '' Gundam Ace'' magazine from February 2007 to ...
''. Here, the bunker is depicted as an Earth Federation base and used as firing control for the Gryps 2 colony laser.


Video games

* In '' Horizon: Zero Dawn'', Cheyenne Mountain is known as All-Mother Mountain, and the Complex has been retrofitted as a Cradle facility prior to the apocalypse. The protagonist, Aloy, was found inside the facility. * '' The Terminator: Dawn of Fate'' included the facility as having been repurposed as Skynet's primary base of operations, something which was alluded to in the films. By the end of the game, the base is heavily damaged when the Resistance use the Time Displacement chamber to send
Kyle Reese Kyle Reese is a fictional character in the ''Terminator'' franchise, who is the protagonist of the first film and a supporting role in other works. Kyle Reese is portrayed by Michael Biehn in ''The Terminator'' (1984) and '' Terminator 2: Judgm ...
back to
1984 Events January * January 1 – The Bornean Sultanate of Brunei gains full independence from the United Kingdom, having become a British protectorate in 1888. * January 7 – Brunei becomes the sixth member of the Association of Southeas ...
to save Sarah Connor. * '' Call of Duty: Modern Warfare 2'' included the facility in a cutscene after a nuclear attack on
Washington DC Washington, D.C., formally the District of Columbia and commonly known as Washington or D.C., is the capital city and Federal district of the United States, federal district of the United States. The city is on the Potomac River, across from ...
* In '' Wasteland 3'': Cult of the Holy Detonation, Cheyenne Mountain houses a power production facility that harvests energy from time-dilated nuclear explosion.


See also

*
Kosvinsky Kamen Mount Kosvinsky Kamen, Kosvinsky Mountain, Kosvinski Mountain, Kosvinsky Rock or Rostesnoy Rock () is a mountain in the northern Urals, Sverdlovsk Oblast, Russia.
– a potential Soviet/Russian counterpart * Mount Yamantau – a potential Soviet/Russian counterpart *
North American Aerospace Defense Command North American Aerospace Defense Command (NORAD ; , CDAAN), known until March 1981 as the North American Air Defense Command, is a Combined operations, combined organization of the United States and Canada that provides aerospace warning, air ...
*
Raven Rock Mountain Complex The Raven Rock Mountain Complex (RRMC), also known as Site R and simply The Rock, is a U.S. military installation with an underground nuclear bunker near Blue Ridge Summit, Pennsylvania, at Raven Rock Mountain that has been called an "undergro ...
*
Aerospace Defense Command 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 establishe ...
*
United States Space Command United States Space Command (USSPACECOM or SPACECOM) is a unified combatant command of the United States Department of Defense, responsible for military operations in outer space, specifically all operations 100 kilometers (62 miles) and greater ...
* Related Colorado Springs military installations **
Cheyenne Mountain Air Force Station 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 facili ...
**
Peterson Air Force Base Peterson Space Force Base, previously Peterson Air Force Base, Peterson Field, and Army Air Base, Colorado Springs, is a United States Space Force base that shares an airfield with the adjacent Colorado Springs Municipal Airport and is home t ...
**
Ent Air Force Base Ent Air Force Base was a United States Air Force base located in the Knob Hill neighborhood of Colorado Springs, Colorado. A tent city, established in 1943 during construction of the base, was initially commanded by Major General Uzal Girar ...
**
Chidlaw Building The Chidlaw Building is a former United States Air Force facility located in the Knob Hill neighborhood of Colorado Springs, Colorado. The building was close to, but not within, the Ent Air Force Base complex, and was leased by the military f ...


Notes


References


External links

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construction scaffolding
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Space Defense Center
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BMDC Operations Room (p. 12-4)
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Space Computational Center
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landform viewed from Ent AFB site
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1970s exterior footage
(minute 6:50) Installations of the United States Space Force in Colorado Government buildings completed in 1965 History of Colorado Springs, Colorado Military history of Colorado National air defence operations centres North American Aerospace Defense Command Nuclear bunkers in the United States Continuity of government in the United States