57 Drone Incursions across 24 Nuclear Sites (2015-2019).

A documented pattern, surfaced largely through FOIA work, of 57 drone/unmanned-aircraft incursions across 24 US nuclear sites between 2015 and 2019, including the Palo Verde nuclear plant swarms of late September 2019. The cluster is cited as modern evidence of unexplained aerial activity over nuclear infrastructure. While many incidents likely involve conventional drones, several remained unidentified, prompting regulatory responses. It feeds the broader 'UFOs and nukes' correlation argument.