Key Facts
- Total declassified files
- 334 across four tranches
- Latest tranche size
- 40 files
- Oldest file date
- 1949 Los Alamos conference
- 2015 Pantex incident
- Diamond-shaped object detected, lockdown, no public findings
- 1948 study
- 210 incidents, 'foreign origin' possibility, marked for destruction
- Videos in latest batch
- Six from US Indo-Pacific Command, 2023-2025
Background
The Pentagon has released its fourth tranche of UFO files under the PURSUE programme on 10 July, bringing the total number of declassified government files to 334 across four batches. This latest batch is the smallest, containing 40 files, but it provides the most direct evidence yet that officials have never been able to explain objects appearing near sensitive military installations.
The documents reveal a pattern of unexplained sightings over US nuclear weapons sites dating back to at least 1949, repeating for 77 years. The oldest file is a stenographic transcript of a classified 1949 conference at Los Alamos Scientific Laboratory, convened after a series of 'green fireball' sightings over New Mexico's nuclear installations.
Attendees included physicist Edward Teller, Nobel prize-winning physicist Frederick Reines, Los Alamos director Norris Bradbury, and government meteorite expert Lincoln LaPaz. LaPaz told the room that 'nothing like this' had ever been observed in a meteorite drop, ruling out the leading natural explanation at the time. Teller raised the possibility of an 'electron phenomenon'. No conclusion was reached, and the transcript remained classified for 77 years.
Current Situation
A more recent file shows that similar reports continued into the 21st century. In September 2015, ground radar at Pantex, the United States' sole nuclear weapons assembly plant, detected a silent, diamond-shaped object. The facility went into lockdown, and armed officers followed the object by vehicle for several miles before losing it.
Video and witness statements were sent to an FBI agent and to Sandia National Laboratories. No findings from either have been made public.
Another document is a joint US Air Force and Naval Intelligence study from December 1948, which reviewed roughly 210 incidents. The authors concluded it would be 'unwise to overlook the possibility that some of these objects may be of foreign origin', a Cold War-era reference to the Soviet Union. The study was marked for destruction on its own routing slip and stayed out of public view for 78 years before appearing in this PURSUE release.
| Batch | Number of Files | Time Period |
|---|---|---|
| First | Not specified | Not specified |
| Second | Not specified | Not specified |
| Third | Not specified | Not specified |
| Fourth | 40 | 2025 release |
Impacts
The latest batch also includes six videos recorded by US Indo-Pacific Command between 2023 and 2025 over the Yellow Sea, South China Sea and East China Sea. The files list locations and dates but do not add commentary on the wider geopolitical context of those waters.
One 2023 recording from the Yellow Sea reportedly shows an object affecting the electro-optical and infrared sensors used to track it, not only appearing on camera but interacting with the equipment capturing the footage. A separate 2025 infrared clip follows what Pentagon documentation describes as 'an area of contrast resembling a six-pointed star'. The file leaves altitude, behaviour and origin blank.
Across four PURSUE releases and 334 declassified files spanning 1948 to 2025, no incident involving a US nuclear site has been publicly closed with an identified cause. The 1949 Los Alamos case ended without the attending scientists reaching a conclusion. The 2015 Pantex incident was referred to the FBI and Sandia National Laboratories, and neither agency has released findings. The 1948 Air Force–Navy study noted 'foreign origin' as a possibility it could not exclude and was then marked for destruction rather than brought to a definitive conclusion.
Future Outlook
Scenario analysis: The possibilities below are not certain predictions.
The Pentagon's own release does not close any of these cases. Each relevant file is listed as unresolved in the accompanying documentation.
If future releases under the PURSUE programme continue to include unresolved cases, the pattern may persist, potentially prompting further public and congressional scrutiny. However, if agencies like the FBI or Sandia National Laboratories were to release findings on the 2015 Pantex incident, it could provide clarity on at least one case.
Alternatively, if no new evidence emerges, the cases may remain unresolved indefinitely, leaving the question of what has been appearing over nuclear sites for 77 years unanswered. The possibility of foreign origin, as noted in the 1948 study, could be revisited if new intelligence becomes available, but that remains speculative.
Source: ibtimes.co.uk
