RAF Bentwaters in Suffolk is best known for the Rendlesham Forest events of December 1980, and this is not those. The archive holds it as a separate 1981 episode at the same base, described by Colonel Charles Halt, who was deputy base commander and is the same officer whose memo and tape carry the better-known case.
What is on the record
One telling on one channel, with the witnesses recorded collectively as four flights of security police rather than as named individuals, and no documents. The grade is a single account.
Two Ministry of Defence files were formerly attached to this case and carried it to the archive's document-corroborated tier. Both were read in full during this review, and both are about the December 1980 Rendlesham affair: parliamentary questions, the ministry's answers about Colonel Halt's memo, nothing else. The word Bentwaters recurs in them because every Rendlesham file names the base, and that recurrence is exactly what fooled the automated cross-reference. Neither file mentions a figure of eight or any 1981 event, and both have been removed.
The account itself is short and unusually clean in shape. An object approached from the North Sea, performed a figure of eight over or near the base and departed back out to sea. The archive also records, in the same telling, that Larry Warren was not present, which matters because Warren's involvement in the 1980 events is contested and the file is explicit about not attaching him to this one.
Why it sits where it does
L0, a single account, after the removal of two documents that belong to a different event at the same base. Halt describes a body of witnesses, but they reach us only through him, and one voice is one voice however many people stand behind it in the telling. If the security police logs of 1981 ever surface, this file is exactly what they would test. What flew the figure of eight is not resolved here.