Eugenia Benítez — San Bernardo; Province of Buenos Aires

Official source account — 2020 annual report, printed page 172: Eugenia Benítez found a luminous ring-like feature when reviewing three older photographs taken at San Bernardo on 27 December 2017. CIAE identified the structure of a circular fluorescent ceiling lamp, including its supports, electrical connection, shadow and faint halo. These details suggested a reflection in a window, with the shadow projected on an indoor ceiling. The witness later recalled taking the photograph from inside a room, confirming the Type A optical explanation. The summaries distinguish reported observations from the agency’s proposed explanations. Source Type A/B ratings describe explanatory confidence and are not encounter classes.