Kirby, England
Kirby, England is the site of a 1999 triangular UAP sighting that UAP Gerb identifies as the most physically consistent with the XF-131 Super Sentinel variant of alleged alien reproduction vehicles — specifically due to the craft's distinctive pyramid-shaped upper fuselage, a feature that distinguishes the XF-131 from the flatter planform of the standard TR-3B.
| Type | sighting_location |
|---|
The 1999 Sighting
The Kirby sighting was reported in 1999 and is catalogued in UAP Gerb's analysis of the Flying Triangles phenomenon alongside a parallel 1999 sighting by Colin Saunders and his family elsewhere in the United Kingdom. The Saunders sighting described a 50-foot triangular craft with a pyramid-shaped upper profile, a flowing liquid mercury-like exterior, and a raised docking mechanism pattern visible on its top and bottom surfaces. The craft pitched up and down approximately 15 degrees as if submerged in water. Both the Kirby and Saunders sightings are assessed as more consistent with the XF-131 Super Sentinel than with the standard TR-3B, based primarily on the shared pyramid-shaped upper fuselage that is absent from the TR-3B's documented profile.
XF-131 Super Sentinel Identification
UAP Gerb uses the Kirby sighting as a distinguishing data point in his taxonomy of alleged ARV craft types. While the TR-3B — as described by Edgar Fouche and illustrated by Mark McCandlish — features a comparatively flat equilateral triangular planform with a central Magnetic Field Disruptor (MFD) ring, the XF-131 Super Sentinel (whose design was rendered by forensic illustrator Bill McDonald based on testimony from four aerospace engineers) features an elevated pyramid-shaped superstructure on its upper surface. The Kirby sighting's matching pyramid profile is presented as the strongest civilian sighting evidence for the XF-131 designation.
The X-Files connection reinforces the cultural footprint of this craft type: Fox Network contracted McDonald's XF-131/Tehachapi Triangle illustration for use in the first regular season episode of The X-Files, titled "Deep Throat," placing this variant of triangular ARV into mainstream popular consciousness.