🇺🇸 USAF — Project Blue Book
In July 1952, several witnesses in Dayton, Ohio, observed a series of unidentified objects appearing in groups of two. The objects moved rapidly without making noise or leaving trails, following arched paths from north to south. Although estimated to be at around 1000 feet altitude, their exact speed or size could not be determined.
The objects appeared at intervals of 3 to 4 minutes, disappearing suddenly without warning. Some witnesses noted they appeared round and bright, with edges that seemed encased in thick glass. Although no sound was heard, witnesses mentioned the objects created a sense of unease. The phenomenon lasted between 20 and 30 minutes, with successive appearances.