Tinley Park lights
Silent red lights in a triangle hovered over Tinley Park, Illinois, on several nights in 2004, seen by large crowds.
2004 CE · 41.57, -87.78 · status: unexplained
The account
On 21 August 2004 at about 10 p.m. three bright lights moved in single file, stopped in a triangle and hovered despite wind before vanishing; the same pattern returned on 31 October. Many residents filmed them.
The sceptical view
Flares hung from balloons or kites is the popular explanation, though a TV test produced a different look; a hoax has not been proven.
The researched reading
Real lights filmed by many people, best explained by flares under balloons, probably launched as a prank. Nobody confessed, which keeps a small share open.
| Explanation | Weight | Why |
|---|---|---|
| Something known, misidentified | 40% | Silent, slowly drifting red-orange lights that keep their spacing and then fade one by one are the typical look of flares or lanterns carried by balloons drifting on the wind. |
| Undetermined | 30% | The share the reading had given to fabrication on doubt rather than evidence: the record does not settle it either way. |
| Genuinely anomalous | 11% | A television re-creation looked different from the videos and no hoaxer came forward, so some share remains open. |
| Perception, memory or mind | 6% | Crowds saw three lights and many perceived a single huge craft between them, a common perceptual ‘completion’. |
| A hoax or fabrication | 5% | The lights returned on dates like Halloween in different years, the pattern of a repeated prank with flares tied to balloons; one witness described flares hanging beneath balloons. |
| Secret human technology | 4% | A military craft would not hover silently over Chicago suburbs on holiday nights. |
| A known natural phenomenon | 2% | No weather or atmospheric phenomenon produces a rigid triangle of red lights. |
| A poorly understood natural phenomenon | 2% | Nothing suggests an unusual natural light. |
Official position: No official investigation; the FAA reported no radar contact and police did not identify a source.