Deputy Director of US Naval Intelligence Scott Bray points to a video of a 'flyby' as he testifies before a House Intelligence Counterterrorism, Counterintelligence, and Counterproliferation Subcommittee hearing about "Unidentified Aerial Phenomena," in Washington, US. May 17, 2022. (Photo: REUTERS)

But UFO enthusiasts hoping for the government to judge any of the hundreds of US military sightings under scrutiny as visits by extraterrestrial spacecraft are likely to be disappointed.

The most recent incidents under review are attributed to a mix of foreign surveillance, including relatively ordinary drone flights, and airborne clutter such as weather balloons, The New York Times reported last week, citing US officials familiar with a classified analysis that was due for delivery to Congress on Monday, October 31.

Many of an older set of unexplained aerial phenomena, or UAPs, are still officially categorized as unexplained, with too little data analysis to draw conclusions, the Times said.