On7February1953 an F-94 interceptor operating from Okinawa followed a bright light after ground radar had reported an unidentified return. The surviving Air Force packet records changes in colour, an apparent pursuit and several electronic plots. It also records an important qualification: the investigators could not establish a strict correlation between the radar observation and the light seen by the crew. Their preferred identification for the visual sighting was Venus.
This account follows all five pages of the released Blue Book packet, including messages, a correction, a summary card and the written assessment. It concerns the February fighter episode, distinct from the June1953 Naha–Kadena weather-observer case. Shared geography and year do not make those different dates and witnesses one event.
The ground report and the scramble
An early message reports three electronic plots: an initial detection and two further plots described as placing the object in orbit. It names an AN/CPS-1 search radar in normal operation and an AN/CPS-4 in limited operation. The reporting chain ran through Okinawa and Far East Air Forces to intelligence offices in the United States. That official transmission establishes that a report was investigated; it does not establish that the radar displayed a solid aircraft.
The initial message says speed and altitude could not be obtained from the electronic observation. It reports a fighter scramble at1233Z and visual contact at1245Z, with the pursuit around9,000feet. A later report gives the first detection at1222Z, scramble at1231Z and a visual interval around1241Z–1300Z. The written assessment uses local evening times and a climb to15,000feet. These differences should remain visible rather than being silently converted into a single exact timeline.
The messages contain positions for the radar site and reported plots, but their printed coordinate strings differ. The article therefore does not reconstruct a measured offshore track from those figures. The presence of coordinates in an official message is not, by itself, sufficient reason to draw a precise trajectory through inconsistent data.
A bright orange light changes appearance
The later narrative says a bright orange object appeared from behind a small cloud formation while the F-94 was in orbit. It diminished in apparent size and brightness, with red and green becoming intermingled. The crew thought it was pulling away at high speed. One message says it looked like an aircraft carrying red, green and orange lights. Neither account describes a clearly resolved disc, sphere or triangular body.
The light appeared below the fighter. The report describes a descent to5,000feet, loss of the object and reacquisition after climbing back to15,000feet. In the initial message, the aircraft could not overtake it while flying at350knots and ended the chase about145miles from the GCI station because fuel was low. Those are reported aircraft circumstances. The light’s distance was not independently measured, so the inability to catch it cannot supply a reliable speed for an unknown physical vehicle.
The crew reportedly followed a heading near290degrees for approximately fifteen minutes before the light disappeared near the horizon or cloud. The written assessment names both pilot and radar operator as visual observers, while stating that airborne radar picked up nothing. This distinction matters: the file has ground-radar reports and an airborne visual sighting, without a successful fighter-radar acquisition tying them together.
What the radars do and do not establish
The two ground equipment types and the three plots are specific evidential features. Their description is stronger than an unsourced later statement that radar confirmed the encounter. Yet the packet does not include a continuous calibrated trace showing the light and a radar target occupying the same successive positions. The early report’s inability to obtain target speed or altitude further limits reconstruction.
The summary card lists air visual observation and ground radar, with a later notation describing false radar targets. The separate assessment is more careful about the proposed cause. It notes scattered stratus and says information was unavailable about temperature inversions or moisture conditions that might have generated a spurious return. Consequently, the reviewed packet does not demonstrate a particular atmospheric mechanism. A suggested false plot should not be rewritten as a measured inversion that investigators proved was present.
The Venus assessment
The investigating office at the base considered Venus the likely visual object. The written assessment places the planet near azimuth274degrees and roughly10degrees above the horizon at the relevant season and time. The summary card gives an approximate270degrees and also mentions Mars nearby. These are the file’s astronomical statements; no independent modern ephemeris calculation has been represented as part of this review.
Investigators proposed that a chance spurious ground return sent the fighter towards a direction where Venus was conspicuous. Their conclusion was probable rather than absolute. The most consequential sentence says no strict correlation could be made between the electronic sighting and the visual contact. That preserves a two-part explanation: a familiar celestial light for the crew, and an electronic report whose specific source remained less securely established.
The reported recession, colour changes and intermittent visibility do not by themselves settle the planet identification. The packet lacks the measured visual ranges and detailed environmental data needed to test every impression. Equally, those impressions do not establish extraordinary acceleration. The evidence should be read at its actual level: a probable ordinary identification accompanied by acknowledged gaps.
Reporting dates and release markings
Additional February messages request more detail and amend the reporting arrangement into parts. Their date stamps show administrative follow-up after the encounter. A correction notice is not a second sighting. Nor do the later unclassified and declassification markings show that the underlying claims were confirmed when the document became available. They describe the handling of the record.
Location and assessment
The map marks an approximate Naha city reference, the reporting-base locality named in the messages. It does not mark the radar site, a precise offshore object position or a verified pursuit route. The encounter took place in military aviation operations; this case does not identify an accessible surviving observation room or establish visitor access to a base.
The classification is Possibly Explained. The Air Force’s probable Venus finding provides a documented proposed identification, but the file itself retains uncertainty about the electronic plots and their relationship to the visual report. The lead image reproduces that assessment page. It is a public-domain investigative document, with the proposal and its qualifications intact, rather than visual evidence of an unknown craft.