Analysis of the 1967 Malmstrom Air Force Base UFO Incident

This analysis was produced using Gemini Deep Research, a generative AI tool developed by Google that assists users in conducting comprehensive online research. It was reviewed by a human (Ben Hatch) before publication.
1. Introduction
The 1967 Malmstrom Air Force Base incident remains a compelling and controversial case within the realm of unidentified flying object (UFO) phenomena. The alleged events of March 1967 at this strategic nuclear missile base in Montana have fueled decades of debate, raising profound questions about national security and the potential for interaction between advanced aerial phenomena and critical military infrastructure. The core of the incident, as reported, involves an orange, disc-shaped UFO that purportedly hovered over the Oscar Flight Launch Control Facility and, in doing so, temporarily rendered ten intercontinental ballistic missiles (ICBMs) inoperable.1 Examining this claim requires a rigorous analysis of the available evidence, set against the backdrop of the Cold War, a period marked by intense global tensions and heightened sensitivity surrounding nuclear weapons capabilities.
During the 1960s, the United States and the Soviet Union maintained a precarious balance of power, relying heavily on their nuclear arsenals as a deterrent. Any perceived vulnerability or disruption to these strategic assets would have been treated with the gravest concern by military and government authorities. The operational status of ICBMs, like those stationed at Malmstrom AFB, was of paramount importance. In this context, the reported interference by an unidentified object takes on significant implications, potentially suggesting a threat from a technologically superior adversary or even an extraterrestrial presence capable of impacting national security.1
This report aims to conduct a comprehensive analysis of the 1967 Malmstrom AFB incident to determine its likely nature. The central question is whether the reported events represent a genuine encounter with an unidentified flying object that directly caused the temporary disablement of the ICBMs, or if a more conventional explanation is plausible. This investigation will delve into eyewitness accounts, official documentation, potential natural or man-made explanations, analyses from researchers and skeptics, available technical data, and comparisons with other similar incidents. By meticulously examining these various facets of the case, this report seeks to provide a well-reasoned conclusion regarding the legitimacy of the alleged UFO interference at Malmstrom AFB in March 1967.
2. The Alleged Events of March 1967
The timeline of alleged unusual events at Malmstrom Air Force Base in March 1967 centers around two primary incidents occurring approximately one week apart. The first event reportedly took place on March 16, 1967, at the Echo Flight Launch Control Center. According to official documentation obtained through the Black Vault, at approximately 0845 hours, all ten missiles at the Echo Flight facility experienced a simultaneous shutdown, indicated by a "No-Go" status on specific channels of the Voice Reporting Signal Assemble (VRSA).2 The 341st Strategic Missile Wing History for the period of January to March 1967, included in the Black Vault document, confirms this significant malfunction.3 While the official logs acknowledge the missile shutdown and subsequent investigation, they attribute the only noted unusual events during this period to the failure of a secondary door actuator motor at Launch Facility (LF) E-2 and the intermittent operation of the diesel generator at LF E-8.3 This official account does not mention any UFO sightings or other unusual aerial phenomena in connection with the Echo Flight missile failures.
The second, and more widely discussed, event allegedly occurred on March 24, 1967, at the Oscar Flight Launch Control Center. The primary source for the details of this incident is former Air Force Captain Robert Salas, who was the on-duty commander at the facility.2 Salas reports receiving a call from a security guard who described seeing strange, silent lights in the sky exhibiting rapid movements, culminating in the appearance of a glowing red or orange, disc-shaped object hovering above the front gate of the Oscar Flight facility.2 Shortly after this report, Salas claims that all ten ICBMs under his control simultaneously went into a "No-Go" or shutdown state, becoming inoperable.2 Salas also states that his commander informed him that a similar event had occurred at another site, which he later understood to be the Echo Flight incident eight days prior.5 Furthermore, Salas recounts that he and other personnel were subsequently interviewed by agents from the Air Force Office of Special Investigations (AFOSI) and were required to sign non-disclosure agreements (NDAs) regarding the incident.4
The descriptions of the alleged UFO at Oscar Flight are relatively consistent across various accounts. It is frequently referred to as "orange, disc-shaped" 7 and also described as "glowing red" 2, "red-orange" 5, "pulsating red-orange light" 5, "saucer-shaped orb" 2, and a "glowing red object, about 30 feet in diameter".8 This general agreement on the color and shape of the object by multiple witnesses, including Salas and the security personnel, suggests they likely observed the same or a very similar aerial phenomenon.
The sequence of missile shutdowns at both Echo and Oscar Flights is reported to have been rapid and near-simultaneous. At Oscar Flight, the missiles reportedly went offline within seconds of the security guard's call to Salas about the hovering UFO.7 The Black Vault document indicates that at Echo Flight, all ten missiles also shut down within ten seconds of each other.3 This rapid and widespread failure of multiple, independent ICBM systems at two separate locations within a short timeframe is a highly unusual occurrence that necessitates a thorough investigation into potential causes, whether conventional or unconventional.
3. Eyewitness Testimony Analysis
The eyewitness testimony surrounding the 1967 Malmstrom AFB incident is primarily centered on the accounts of Robert Salas and the security personnel who reportedly observed the UFO. Robert Salas has been a consistent voice on this matter for several decades, recounting his experience in numerous interviews, books, and testimonies.2 His core assertion is that the UFO he was informed about by his security guard directly caused the simultaneous shutdown of the ten nuclear missiles under his command at the Oscar Flight Launch Control Center. Salas has also interpreted this event as a deliberate message from extraterrestrial beings concerning the dangers of nuclear weapons.2 His long-standing advocacy for UFO disclosure and his detailed accounts lend a degree of credibility, stemming from his former position and technical background as a missile launch officer. However, it is important to acknowledge that his personal beliefs about UFOs and his public role in the disclosure movement could potentially influence his narrative over time.
Reports also indicate that security guards at both the Echo and Oscar Flight facilities witnessed unusual aerial phenomena around the times of the missile malfunctions.2 At Oscar Flight, they described seeing strange lights exhibiting unusual maneuvers before the appearance of the glowing red-orange, disc-shaped object hovering near the gate. Notably, there are reports of a security guard at Oscar Flight sustaining an injury during this encounter.2 The guards' reported fear and the account of one guard refusing further security duty afterwards 5 suggest that they experienced something genuinely unusual and unsettling that they could not readily explain within their training and experience. The corroboration of a UFO sighting by multiple security guards from different vantage points at the Oscar Flight facility strengthens the likelihood that an unusual aerial object was indeed present.
The consistency in the basic description of the UFO at Oscar Flight (reddish-orange color, disc/orb shape, hovering near the gate) between Salas' account and the descriptions attributed to the security personnel is a notable point of agreement. Furthermore, the temporal correlation between the reported UFO sighting at Oscar Flight and the simultaneous missile shutdowns under Salas' control is a significant detail that warrants further examination. While correlation does not automatically imply causation, the close timing of these two events raises questions about a potential connection.
Claims have also been made of a much larger number of witnesses. Some sources suggest that the incident was corroborated by "more than 100 official witnesses," including missile launch officers, maintenance personnel, and security patrols.17 If accurate and representing independent observations of the UFO or related events, this high number would significantly bolster the credibility of the claims. However, the provided snippets do not offer detailed information about these other witnesses, their roles, or the specifics of their corroboration, making this claim difficult to assess definitively without further evidence.
It is also worth noting that Robert Salas initially misremembered the specific flight involved, identifying it as Echo Flight before later correcting it to Oscar Flight.15 While his eventual correction suggests a commitment to accuracy, this initial memory lapse highlights the fallibility of human memory, especially when recalling events from decades past. This underscores the importance of seeking corroborating evidence beyond eyewitness testimony alone.
4. Official Air Force Investigations and Documentation
The official response to the alleged UFO incident at Malmstrom Air Force Base in 1967 is a crucial aspect of determining its legitimacy. Project Blue Book, the official US Air Force program for investigating UFO sightings, operated from 1947 to 1969.6 Its declassified records are now available at the National Archives.19 Notably, some sources claim that the Malmstrom incident has been "Declassified in Project Blue Book" and that the US government acknowledges that it happened.18 Verifying this claim by examining the actual declassified Project Blue Book files for any record of the 1967 Malmstrom AFB incident is essential. The abstract from The Black Vault also mentions a "REPORT ON BLUE BOOK PROJECT," suggesting potential relevant information within that collection.21
Beyond Project Blue Book, the Black Vault document provides excerpts from the 341st Strategic Missile Wing History.3 While this document officially acknowledges the Echo Flight missile shutdown on March 16, 1967, it attributes the only noted unusual events to mechanical failures and makes no mention of any UFO activity.3 This discrepancy between the official logs and eyewitness accounts is a significant point of investigation.
Robert Salas has stated that he and other personnel were interviewed by the Air Force Office of Special Investigations (AFOSI) and signed NDAs.7 The involvement of AFOSI suggests that the Air Force took the events seriously enough to conduct a formal investigation beyond routine technical troubleshooting. Any official records of these interviews or the NDAs themselves would be highly relevant.
Furthermore, a Strategic Air Command (SAC) document released under FOIA reportedly states that "all ten missiles in echo flight at Malmstrom lost strat alert within ten seconds of each other" and notes a "grave concern" about the case.2 The existence of this SAC document, expressing "grave concern" over the Echo Flight missile failures, indicates that the incident had significant implications for the strategic readiness of the US nuclear arsenal, regardless of the perceived cause. Locating and analyzing the full content of this SAC document is essential for a complete understanding of the official response.
The potential discrepancy between the Black Vault document's focus on technical malfunctions and the claims of a UFO presence in other accounts suggests the possibility of compartmentalized investigations or a deliberate effort to downplay or conceal any UFO-related aspects of the incidents in official records. The mention of NDAs further supports the idea that some information related to the events was considered sensitive and not for public disclosure. The high-level concern within SAC, as evidenced by the reported document, underscores the seriousness with which the missile malfunctions were treated within the military command structure.
5. The Black Vault Document Examination
The Black Vault document, obtained through a FOIA request, provides a specific official record related to the March 16, 1967 incident at Malmstrom AFB.3 This collection of excerpts from the 341st Strategic Missile Wing History confirms the simultaneous shutdown of all ten missiles at the Echo Flight Launch Control Center.3 The document details the timeline of the event and mentions that Technical Analysis Division (TAD) personnel inspected the Launch Control Center for potential causes like loose cable connections and issues with the Electric Surge Arrester (ESA).
Notably, the historical summary for the period of January to March 1967 identifies the failure of a secondary door actuator motor at LF E-2 and the intermittent operation of the diesel generator at LF E-8 as the only unusual events during that quarter.3 The document explicitly states that the Air Force has no records of any audio or video tapes or any personnel injuries related to the incident.3 It also includes information about a February 1967 inspection of HF Hardened Antennas, revealing numerous discrepancies.3
The Black Vault document serves as an official acknowledgement of the significant missile malfunctions at Echo Flight and offers insights into the technical context surrounding these events, including maintenance activities and investigations into potential causes. It highlights the official focus on technical explanations for the missile shutdowns, at least within the scope of these historical records. However, a crucial point is the complete absence of any reference to a UFO sighting or any unusual aerial activity in connection with either the Echo Flight incident or the alleged Oscar Flight incident on March 24, 1967. This silence directly contradicts the eyewitness accounts, particularly those of Robert Salas and the security personnel at Oscar Flight.
The detailed technical information within the Black Vault document could be valuable for evaluating whether the reported missile shutdowns align with known failure modes of the Minuteman I system. The simultaneous nature of the failures at Echo Flight is particularly noteworthy. Analyzing the specific "No-Go" indications mentioned in the document in the context of the Minuteman I system's architecture and common failure points could provide clues about the underlying cause.
It is important to consider that the FOIA request that yielded this document specifically targeted the March 16th incident (Echo Flight).3 This might explain the lack of information about the alleged March 24th incident at Oscar Flight in this particular document. It suggests that separate FOIA requests or archival research might be necessary to uncover any official documentation related to the events reported by Robert Salas. Furthermore, the Air Force's explicit denial of any records of injured personnel in this response directly contradicts claims of a security guard being injured during the Oscar Flight incident 2, raising questions about the accuracy of the eyewitness testimony or the completeness of the official records provided.
6. Alternative Explanations and Skeptical Perspectives
While the eyewitness accounts and some researchers posit a UFO as the cause of the Malmstrom missile malfunctions, various alternative explanations, including natural phenomena, man-made objects, and psychological factors, have been proposed. Skeptical perspectives often emphasize the lack of definitive physical evidence and the potential for misinterpretation or embellishment in eyewitness accounts.
Natural phenomena such as unusual cloud formations or electrical phenomena are unlikely to account for the reported hovering, disc-shaped object and its alleged direct impact on missile systems. A more frequently cited natural explanation by skeptics is the misidentification of celestial objects, particularly the planet Mars. Robert Sheaffer, a prominent UFO skeptic, suggested that the security guards at Malmstrom AFB likely observed Mars, which was at its maximum brightness in April 1967, close to the time of the incident.23 While Mars can appear as a bright, reddish-orange object, its stationary nature and the claim of it causing complex electronic systems to fail remotely make this explanation highly improbable for the described events.
Man-made objects, such as experimental aircraft or advanced military technology from the US or the Soviet Union, are another potential explanation. However, the description of an orange, disc-shaped object with silent hovering capabilities was not characteristic of publicly known aircraft in 1967. While classified aerospace programs existed during the Cold War, there is no publicly available evidence suggesting the deployment of such an aircraft with the ability to remotely disable missile systems at that time.
Psychological factors can also play a role in the interpretation of unusual events. Misidentification due to stress or the power of suggestion, as well as mass hysteria or the spread of rumors, could influence eyewitness accounts. The high-pressure environment of a nuclear missile base during the Cold War might have made personnel more susceptible to interpreting unusual sightings as significant threats or interventions. The possibility of a deliberate hoax, though requiring significant coordination, cannot be entirely dismissed.
UFO skeptics often highlight the lack of verifiable physical evidence and question the reliability of eyewitness testimony. In the case of Malmstrom, skeptics like Robert Sheaffer have proposed conventional explanations for the visual sightings and questioned the direct link between the sightings and the missile malfunctions, suggesting they might have been coincidental technical failures.23 The Talk page of Malmstrom AFB's Wikipedia entry reflects a strong skeptical viewpoint, dismissing the UFO claim as baseless.24 However, it is important to note that Sheaffer's claim of "no paper trail" for the missile shutdowns is contradicted by the Black Vault document's confirmation of the Echo Flight failures 3, indicating a potential oversight in the skeptical analysis.
7. Technical Feasibility of Missile Disablement
Assessing the technical feasibility of a UFO causing the temporary disablement of ten ICBMs without physical damage requires an understanding of the Minuteman I ICBM system deployed at Malmstrom AFB in 1967. This early generation missile system was complex, involving intricate guidance and launch control mechanisms. Robert Salas specifically mentions the guidance system and the "logic coupler" as the parts affected by an "intermittent electrical pulse" allegedly caused by the UFO.4
Research into the Minuteman I system from that era is necessary to determine if a temporary, non-destructive disablement of the guidance system, as described, is technically plausible, either through a known mechanism or a hypothetical advanced technology. The claim of an "intermittent electrical pulse" suggests a sophisticated form of interference, possibly involving electromagnetic pulses (EMP) or directed energy. Whether a UFO could generate such a precise and targeted pulse capable of affecting multiple independent missile systems simultaneously without causing widespread electronic damage is a matter of speculation.
Salas's assertion that no equipment was fried or damaged, with the missiles simply shutting down due to an electrical pulse to the guidance system, is a key aspect of his account.4 This implies a level of control and understanding of the missile systems that would be remarkable for any unidentified object. While electronic systems of that era were generally more vulnerable to EMI than modern systems, a sufficiently powerful EMP to affect ten independent missile systems would likely have had other noticeable effects on the base's electrical infrastructure and equipment. The absence of such reports needs to be considered.
Salas's specific mention of the "logic coupler" being affected by the electrical pulse demonstrates a level of technical detail. Verifying if a "logic coupler" was indeed a critical and potentially vulnerable component of the Minuteman I guidance system in 1967 is important for assessing the technical plausibility of his account.
8. Radar and Technical Data Review
The existence of radar data or other technical evidence that might corroborate or contradict the eyewitness accounts is a critical element in evaluating the Malmstrom incident. Notably, one source states that classified documents obtained through the Freedom of Information Act revealed that FAA radar data did, in fact, spot an unidentified craft flying over the base on the night of the Oscar Flight incident.16 If this is accurate, it would provide significant corroboration for the eyewitness accounts of a UFO. Obtaining the specifics of this radar data, such as the time, location, speed, and trajectory of the unidentified craft, is essential for further analysis.
Beyond radar data, exploring the potential existence of telemetry data from the missile systems themselves that might have recorded anomalies or fluctuations in power or guidance systems around the time of the shutdowns could provide further insights. Similarly, searching for any records of unusual electromagnetic or other energy readings in the vicinity of the launch control facilities during the relevant periods might also yield corroborating evidence. The absence of any mention of such technical data in the provided snippets does not necessarily mean it doesn't exist or hasn't been declassified. Further investigation into these potential sources might be warranted.
9. Comparison with Similar UFO-Military Encounters
Comparing the Malmstrom AFB incident with other reported UFO sightings involving military facilities, particularly those housing nuclear weapons, reveals a recurring pattern.5 Reports exist from various countries and time periods detailing UFO sightings and alleged interactions at nuclear weapons sites, including the former Soviet Union and Britain.6 Author Robert Hastings has extensively researched this phenomenon, documenting "more than a hundred UFO incursions at nuclear weapons sites during the Cold War era and beyond".5 The mention of another "nearly identical incident" at a nearby Minuteman installation 1, likely referring to the Echo Flight event, further suggests a potential pattern.
A recurring theme in many of these reports, including the Malmstrom case, is the alleged temporary disablement of nuclear missiles or weapons systems without causing permanent damage.25 The UFOs involved are often described as disc-shaped or orbs, exhibiting unusual lights and silent, rapid movements, consistent with the descriptions from Malmstrom. Experts have theorized that UFOs might be regularly spotted near nuclear power sites due to extraterrestrial concern about our defensive capabilities and the potential threat of nuclear annihilation.26 The consistency in the descriptions of UFOs and their alleged effects across numerous independent reports strengthens the possibility that these events might be related to a genuine, unidentified phenomenon with a particular interest in nuclear technology.
10. Credibility and Motivations of Key Figures
Evaluating the credibility and potential motivations of the individuals involved is crucial for assessing the Malmstrom incident. Robert Salas, as a former US Air Force officer with a technical background and a consistent long-term recounting of the events, appears to be a credible witness.9 However, his long-standing involvement in the UFO disclosure movement and his authorship of books on the subject might create a vested interest in maintaining his narrative. His initial memory lapse regarding the specific flight involved also serves as a reminder of the potential for human error in recollection.15
The accounts from security personnel corroborate the sighting of an unusual aerial object at Oscar Flight, lending support to Salas's narrative. Their reported fear and the incident of a guard refusing further duty suggest a genuine and impactful experience. However, the lack of detailed independent accounts makes a thorough individual credibility assessment challenging.
UFO researchers like Robert Hastings are motivated by an interest in understanding the UFO phenomenon, but their interpretations might be influenced by pre-existing beliefs. Similarly, UFO skeptics like Robert Sheaffer are motivated by a desire for scientific rigor and conventional explanations, potentially leading to a bias towards debunking such claims. John Greenewald, Jr. of The Black Vault is primarily motivated by promoting government transparency and providing access to information through his extensive FOIA work.
The fact that Salas initially misidentified the flight but later corrected it highlights the fallibility of memory, even in seemingly credible witnesses. The motivations of researchers and skeptics are often intertwined with their pre-existing beliefs about the UFO phenomenon, which should be considered when evaluating their analyses.
11. Conclusion
The 1967 Malmstrom Air Force Base UFO incident presents a complex case with compelling eyewitness testimony but limited definitive corroborating evidence. Robert Salas's consistent account of a UFO coinciding with the simultaneous shutdown of ten ICBMs at the Oscar Flight Launch Control Facility is supported by reports from security personnel who witnessed an unusual aerial object. The rapid and widespread nature of the missile failures at both Oscar and Echo Flights is officially documented, though the Air Force's explanation in the provided Black Vault excerpts focuses on technical malfunctions for the Echo Flight incident and remains silent on the Oscar Flight events and any UFO connection.
While the eyewitness accounts are intriguing and align with a pattern of reported UFO interest in nuclear weapons sites globally, significant questions remain. The lack of any mention of a UFO in the official 341st Strategic Missile Wing History regarding either incident is a notable discrepancy. The claim of over 100 witnesses needs further substantiation. Skeptical explanations, such as the misidentification of celestial objects, while not fully convincing for the described events, highlight the need for caution in interpreting eyewitness testimony. The technical feasibility of a UFO causing a precise, non-destructive disablement of multiple ICBMs remains speculative.
The reported FAA radar detection of an unidentified craft over the base during the Oscar Flight incident is a potentially crucial piece of corroborating evidence that warrants further investigation. Obtaining and analyzing this radar data could significantly impact the assessment of the incident's legitimacy.
Based on the available evidence, it is difficult to definitively conclude that the 1967 Malmstrom AFB incident was unequivocally a legitimate UFO encounter that caused the missile disablements. While the temporal correlation between the sighting and the malfunctions is suggestive, and the consistency with other reported UFO-nuclear site encounters is notable, the lack of explicit official confirmation of a UFO connection in the provided documentation, coupled with plausible (though not entirely satisfactory) alternative explanations, leaves room for doubt.
Further research is recommended to delve deeper into the declassified Project Blue Book files for any mention of the Malmstrom incidents, to locate and analyze the full SAC report on the Echo Flight shutdowns, and most importantly, to attempt to access and examine the FAA radar data that reportedly captured an unidentified craft over the base. Until such additional evidence is thoroughly analyzed, the 1967 Malmstrom AFB incident remains a compelling but unproven case of potential UFO interaction with sensitive military assets.
Works cited
- 1967 Malmstrom AFB UFO Incident: How do I balance the historical with fiction? - Reddit, accessed March 31, 2025, https://www.reddit.com/r/Screenwriting/comments/1g9mlkv/1967_malmstrom_afb_ufo_incident_how_do_i_balance/
- Ex Minuteman commander claims Pentagon officials lied about not knowing about 1967 UFO incident - Daily Mail, accessed March 31, 2025, https://www.dailymail.co.uk/news/article-10830491/Ex-Minuteman-commander-claims-Pentagon-officials-lied-not-knowing-1967-UFO-incident.html
- malmstromufo.pdf - The Black Vault, accessed March 31, 2025, https://documents.theblackvault.com/documents/ufos/malmstromufo.pdf
- The three-word warning message UFOs are trying to send humans, according to top Air Force vet - Daily Mail, accessed March 31, 2025, https://www.dailymail.co.uk/sciencetech/article-14128219/Ex-Air-Force-official-claims-UFOs-send-humans-three-word-warning-nuclear-weapons.html
- The Malmstrom nuclear UFO incident (1967) returns - Meer, accessed March 31, 2025, https://www.meer.com/en/74766-the-malmstrom-nuclear-ufo-incident-1967-returns
- Ex-Air Force Personnel: UFOs Deactivated Nukes - CBS News, accessed March 31, 2025, https://www.cbsnews.com/news/ex-air-force-personnel-ufos-deactivated-nukes/
- Air Force vets testified to witnessing UFOs TURN OFF nuclear warheads | Daily Mail Online, accessed March 31, 2025, https://www.dailymail.co.uk/news/article-11776067/Air-Force-vets-testified-witnessing-UFOs-TURN-nuclear-warheads.html
- Why Have There Been So Many UFO Sightings Near Nuclear Facilities? - HISTORY, accessed March 31, 2025, https://www.history.com/news/ufos-near-nuclear-facilities-uss-roosevelt-rendlesham
- Unidentified: The UFO Phenomenon: Salas, Robert L: 9781482084863 - Amazon.com, accessed March 31, 2025, https://www.amazon.com/Unidentified-Phenomenon-Robert-L-Salas/dp/1482084864
- Unidentified: The UFO Phenomenon - Salas, Robert L: 9781482084863 - AbeBooks, accessed March 31, 2025, https://www.abebooks.co.uk/9781482084863/Unidentified-UFO-Phenomenon-Salas-Robert-1482084864/plp
- Unidentified: The UFO Phenomenon: How World Governments Have Conspired to Conceal Humanity's Biggest Secret - Amazon.com, accessed March 31, 2025, https://www.amazon.com/Unidentified-Phenomenon-Governments-Conspired-Humanitys/dp/1601633424
- Robert Salas - Tantor Media, accessed March 31, 2025, https://tantor.com/author/robert-salas.html
- Robert Salas - Ballotpedia, accessed March 31, 2025, https://ballotpedia.org/Robert_Salas
- Unidentified: the UFO Phenomenon: How World Governments Have Conspired to Conceal Humanity's Biggest Secret : Salas, Robert, Friedman, Stanton T. - Amazon.com.be, accessed March 31, 2025, https://www.amazon.com.be/-/en/Robert-Salas/dp/1601633424
- Bob's History, accessed March 31, 2025, https://www.usafaclasses.org/1964/Salas_Robert/history.htm
- Mysterious UFO Over Malmstrom Air Force Base | Close Encounters 101 - YouTube, accessed March 31, 2025, https://www.youtube.com/watch?v=pquhzDhhn54
- What are the Most Well-Known and Widely Accepted UFO Sightings? - JA Show, accessed March 31, 2025, https://jashow.org/what-are-the-most-well-known-and-widely-accepted-ufo-sightings/
- USAF CONFIRMS UFO Incident at Malmstrom AFB - YouTube, accessed March 31, 2025, https://www.youtube.com/watch?v=szPhFbdHCz4
- Project BLUE BOOK - Unidentified Flying Objects - National Archives, accessed March 31, 2025, https://www.archives.gov/research/military/air-force/ufos
- Unidentified Flying Objects and Air Force Project Blue Book - AF.mil, accessed March 31, 2025, https://www.af.mil/About-Us/Fact-Sheets/Display/Article/104590/unidentified-flying-objects-and-air-force-project-blue-book/
- ufo-afhra-102013.pdf - The Black Vault, accessed March 31, 2025, https://documents.theblackvault.com/documents/ufos/ufo-afhra-102013.pdf
- Did UFOs Really Disable Nuclear-Armed American Missiles in 1967?, accessed March 31, 2025, https://coffeeordie.com/ufo-disabled-nuclear-icbm
- Robert Sheaffer - Wikipedia, accessed March 31, 2025, https://en.wikipedia.org/wiki/Robert_Sheaffer
- Talk:Malmstrom Air Force Base - Wikipedia, accessed March 31, 2025, https://en.wikipedia.org/wiki?title=Talk:Malmstrom_Air_Force_Base
- UFOs & Nukes: Extraordinary Encounters at Nuclear Weapons Sites - Amazon.com, accessed March 31, 2025, https://www.amazon.com/UFOs-Nukes-Extraordinary-Encounters-Nuclear/dp/1544822197
- 'Alarming' reason UFOs appear next to nuclear power sites explained by alien experts, accessed March 31, 2025, https://www.irishstar.com/news/us-news/experts-ufo-nuclear-site-theory-33206072
- Did UFOs deactivate US missiles, collect vital information on nuclear arsenals and ICBMs? What did Pentagon mandarins say? - The Economic Times, accessed March 31, 2025, https://m.economictimes.com/news/international/us/did-ufos-deactivate-us-missiles-collect-vital-information-on-nuclear-arsenals-and-icbms-what-did-pentagon-mandarins-say/articleshow/110881586.cms