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Faceted archive of NUFORC reports — filter by shape, place, and decade. Every URL is deterministic SSR (cacheable at the edge).

Much quieter than a jet or a propeller plan yet not a glider. It made a mechanical sound. Shaped like a triangle with two white lights

Rectangular floating object, 4X the size of a hot air balloon, but at about the same height as hot air balloon travels. Grayish.