Trinity UFO Crash — San Antonio, New Mexico

The Trinity case refers to an alleged crash retrieval event near San Antonio, New Mexico, in late August 1945 — approximately three weeks after the detonation of the first nuclear weapon at the nearby Trinity test site, and two years before the Roswell incident. The case was brought to public attention through the 2021 book "Trinity: The Best-Kept Secret" by ufologist Paola Harris and astrophysicist Jacques Vallée, based on decades of witness interviews with Reme Baca (born 1937) and José Padilla (born 1938), who claimed to have been children present at the scene.

According to their accounts, Baca and Padilla were working on the Padilla family cattle ranch when they observed an avocado or acorn-shaped craft crash into the desert terrain. The craft was roughly 15 feet in length. The two boys reportedly approached the craft over subsequent days, observing occupants they described as small, thin beings with disproportionate heads who appeared to be injured or incapacitated. U.S. Army personnel arrived within days and conducted a recovery operation, using a primitive mechanical arm to extract material.

Material analysis conducted by scientists affiliated with the investigation reportedly identified unusual isotopic ratios inconsistent with known terrestrial manufacturing processes of the 1940s, though independent verification remains limited. The Army's recovery operation allegedly left significant ruts and disturbances visible on the ground, and the witnesses maintained their accounts consistently across multiple interviews over several years before their deaths.

The proximity to the Trinity nuclear test has led researchers to speculate about a possible connection between early nuclear detonations and the appearance of anomalous craft — a theme that recurs across multiple Cold War incidents. The case remains contested: skeptics note the advanced age of the witnesses and the lack of contemporaneous documentation, while advocates including Vallée argue that the detailed consistency of the accounts and the material evidence warrant serious investigation.