Documents / Official release
This is a 2023 draft research paper by Richard M. Medina and Simon Brewer of the University of Utah and Sean M. Kirkpatrick of the Department of Defense, prepared for journal submission and released in full by AARO in 2025. It analyzes 98,724 NUFORC public sighting reports from 2001 to 2020 by county with a Bayesian model. It finds that more light pollution and tree canopy mean fewer sightings, while more air traffic and military area mean more. Cloud cover showed no relationship.
“Salisbury”2 pages
025 traffic and with military activity suggest that people are seeing things that are human made, in some unexpected way. As a good example, a hot air balloon seen from a far enough distance can look unexplainable, especially if it is seen by someone who has not seen one before. Drones, which we did not test specifically for here, can seem to fly erratically in areas where people aren’t used to seeing things moving in the sky. It is unlikely that events, such as ball lightning, seismic based lights, insects, or other natural occurrences are responsible for more than a small portion of these sightings, as they are rare events themselves. We had initially expected cloud cover to be credibly related to sightings, as clouds can cause light to scatter and by doing so, obscure reflective or illuminated things that are moving within or above them, and create patterns that some might consider unexplained. However, that was not the case. While these results provide an initial assessment of factors linked to the sightings of unidentified or unexplained phenomenon, they also generate further questions. We find credible relationships with these factors and there are now spatial patterns that are require further investigation. Why, for example, are the rates of sightings low in California, when they are high in many of the surrounding states? Why do the rates of sightings fluctuate across time? Some of our future research will include temporal considerations (e.g., variation over time) to hopefully address some of these questions. We further note that our covariates represent average conditions, and while these clearly explain much of the first-order pattern in sightings, additional factors may be identified by considering individual events. We wonder how many sightings can be explained by sociocultural factors. For example, are there spikes of sightings after Hollywood attention is given to movies or TV shows on aliens? Are some cultures more likely to see UAPs, because of their belief systems? Have some U.S. regions/places been given more attention to historical UAP observations (e.g., New Mexico)? There is no question that geography and “place” influence people’s belief systems and behavior. In some places, the expectation of what you are supposed to see, may influence what you actually see. In a process termed motivated perception, people may bias their perceptions to arrive at expected conclusions that meet their goals or offer rewards (Kunda, 1990; Leong et al., 2019). If your goal is to see a UAP, you may very well see one given the opportunity. Many of the reports used here, given our results, may very well be explained by human based air traffic. We do not test natural phenomena, as discussed here, e.g., ball lightning. Many of those cases would be impossible to test for, as those occurrences are very rare and even more rarely recorded. One potential solution to estimate this would be to use weather data that identifies thunderstorms or other similar event activity. However, it could be the minority of sightings that take place during weather events given their spatial and temporal distribution. We approach this problem with caution, because of both the complexity of the topic and the sensitivity of available data. The U.S. Government position is that “UAP clearly pose a safety of flight issue and may pose a challenge to U.S. national security” (Office of the Director of National Intelligence, 2021, p. 3). For national security issues, uncertainties and unknowns are never good. It is the job of intelligence efforts to minimize the unknowns. Regardless of what people are seeing, and whether they are military pilots, civilian pilots, or general bystanders,Page determined to be Unclassified Reviewed by Chief of Staff, AARO IAW FY24 NDAA, Section 1841 (a)(1)(C) Date: 02/06/2025
Official release, from the nara collection. The PDF is mirrored here; the original link is above. 16 pages are in the text index: search them above, or from the library's search.