ENCOUNTER / OFFICIAL MEMO / WITNESS ACCOUNTS
Lights near two U.S. Air Force bases, a field investigation by a deputy commander, and the memo that made the case part of UFO history.
Over several nights in late December 1980, U.S. Air Force security personnel near RAF Woodbridge and RAF Bentwaters reported unusual lights around Rendlesham Forest in Suffolk, England.
On the first night, security personnel John Burroughs, Jim Penniston and Ed Cabansag entered the forest after lights were seen near the base’s east gate. On the night of December 28–29, deputy base commander Lieutenant Colonel Charles Halt led a second patrol, recorded part of it on cassette, and later sent the Ministry of Defence a memo titled “Unexplained Lights.”
The written memo and its archival trail establish that a senior U.S. Air Force officer formally reported observations to the UK government. The National Archives says the MOD found no defence interest or threat to UK airspace. Neither the memo nor the surviving records establish that a craft landed or that the lights were extraterrestrial.
Reading the file: The memo is a record of what Halt reported, not a government finding that a UFO craft had landed. Later accounts add details that are not present in the early document.
01 / WITNESS ACCOUNTS
The case is a sequence of reports from different nights and observers, not one uninterrupted encounter witnessed in exactly the same way.
Burroughs was among the security personnel who went into the forest after lights were seen near Woodbridge’s east gate. Early accounts describe lights and an uncertain object in the trees. His presence and participation are part of the witness record; details of what the lights represented remain disputed.
FIRST-NIGHT ACCOUNTPenniston’s later account describes approaching and touching a small triangular craft and observing symbols on its surface. The specific contact and symbol details became more developed in later retellings and are not established by Halt’s contemporaneous memo. The widely circulated binary-code interpretation appeared decades afterward and should not be treated as part of the 1980–81 record.
LATER TESTIMONY / ATTRIBUTEDCabansag was another security policeman who accompanied the first forest patrol. The earliest witness material is not identical in every detail: observers describe lights, motion and distance differently. That variation is normal to record, not something to flatten into a single definitive account.
FIRST-NIGHT ACCOUNTHalt led a follow-up investigation during the night of December 28–29. He recorded observations and comments from the patrol, including a rhythmic light, ground marks and modest radiation readings. On January 13, 1981, he sent the “Unexplained Lights” memo to the UK Ministry of Defence. The document is the strongest contemporary record associated with the case, but it reports uncertain observations rather than identifying a craft.
CONTEMPORARY OFFICIAL REPORT
The memo is evidence that Halt reported unexplained lights. It does not identify their cause.
CONTEMPORARY DOCUMENT / INTERPRETATION REMAINS OPEN02 / THE EVENT RECORD
The first patrol, daytime inspection and Halt’s later investigation are distinct parts of the chronology.
Security personnel at RAF Woodbridge reported lights outside the base. Burroughs, Penniston and Cabansag entered the forest, initially concerned that an aircraft might have come down. Accounts describe moving lights at different distances; the early reports do not agree on a single object or a definitive close-up inspection.
FIRST-NIGHT PATROLPersonnel returned to the area in daylight and described shallow ground impressions and damaged branches. Photographs and measurements are part of the later case record. Such marks document an inspection; without diagnostic material or a verified chain of custody, they do not identify what made them.
GROUND MARKS / NON-DIAGNOSTICLieutenant Colonel Charles Halt led a group back into the forest. His cassette recording captures discussion of lights, the direction of observations, ground depressions and radiation-meter readings. A rhythmic light toward the coast is often compared with the Orfordness lighthouse; that may explain an important part of this night, though it is not a complete explanation for every report.
SECOND-NIGHT PATROL / FIELD RECORDINGHalt sent a one-page memorandum to the Ministry of Defence describing the observations. The National Archives catalogs it under DEFE 24/1948/1 and notes that only a single-sheet report about the event itself is held there, alongside related correspondence.
OFFICIAL CORRESPONDENCEPublished accounts added more detailed descriptions of a triangular craft, direct physical contact, missing time and binary messages. These later claims are part of Rendlesham’s cultural history, but they are not present in the same form in Halt’s 1981 memo and should be attributed to the people who made them.
LATER CLAIMS / NOT IN THE MEMO
SUFFOLK WOODLAND / EDITORIAL VISUAL, NOT INCIDENT PHOTOGRAPHY03 / LOCATION & CONTEXT
RAF Woodbridge and RAF Bentwaters were U.S. Air Force installations in Suffolk, eastern England. Rendlesham Forest lies close to the bases. In December 1980, the perimeter lights, a nearby coast and the Orfordness lighthouse formed part of the visual environment in which personnel made their observations.
The lighthouse explanation is particularly relevant to the rhythmic light Halt’s team described on the second night. A bright meteor has also been proposed as a possible trigger for some first-night reports. These explanations can account for parts of the case, but they should not be presented as though every witness, light and night has been conclusively matched to one source.
04 / CLAIM VS. CHECK
The strongest way to assess an extraordinary case is to separate the original documents from later recollections and proposed explanations.
Halt reported lights and an investigation to the UK Ministry of Defence.
Yes. The National Archives catalogs his December 1980 “Unexplained Lights” letter under DEFE 24/1948/1. The memo establishes that the report was made, not that its most unusual interpretation was correct.
Later accounts often describe the memo as proof the government knew a craft had landed.
The National Archives says a parliamentary response found nothing of defence interest in the alleged sighting and the MOD reported no threat to UK airspace or national security. That is not an endorsement of an extraterrestrial explanation.
Penniston and others later described a triangular craft, impressions and close physical contact.
Small ground marks and tree damage were described and photographed. No authenticated craft photograph, recovered material or diagnostic physical evidence is publicly available to establish a landing.
Halt’s group reported meter readings above background at several points.
The memo records readings, but the instrument, calibration, background procedure and scale limit what can be concluded. The reported values are not by themselves proof of a craft or unusual material.
Some witnesses said the rhythmic light was separate from the lighthouse.
Independent analysis compares the direction and flash pattern on Halt’s tape with the Orfordness lighthouse, a strong explanation for a significant second-night light. It does not automatically explain the first-night reports or every later account.
IMPORTANT DISTINCTIONThe UK National Archives preserves a report about the incident and related inquiries. An official file documents what was reported; it is not official confirmation that a UFO craft landed.
05 / WATCH THE RECORD
The memo and early statements are the contemporary record. This later video is an explainer, not incident footage.
Thumbnail opens the explainer in a new tab; original memo and archive records are linked below.
READING THE FILE
VIDEO EXPLAINERUntold Evidence / The UFO Memo a US Colonel Sent the British Government↗
The National Archives describes the catalogued Halt letter and related correspondence. The video is a later explainer; it is not original incident footage. Later witness accounts are attributed to their speakers.
KEEP THE MEMO.
CHECK THE CLAIM.