This video can not be played

The US government released a fourth tranche of records regarding Unidentified Anomalous Phenomena (UAPs), marking the latest step in an effort to declassify government files on UFOs. US Defense Secretary Pete Hegseth said that the long-classified files have historically fuelled "justified speculation," saying that the American people have a right to see the information for themselves.

Read previous coverage of the US government's release of these formerly classified materials.

US declassifies even more UFO videos. Video, 00:01:00US declassifies even more UFO videos

Up Next. Fighter jet shoots down UFO in newly declassified video. Video, 00:01:04Fighter jet shoots down UFO in newly declassified video

Watch: Why is there a 'black cloud' over unity at the Nato summit? Video, 00:00:54Watch: Why is there a 'black cloud' over unity at the Nato summit?

Watch: Buckling support beams seen inside New York high-rise. Video, 00:01:16Watch: Buckling support beams seen inside New York high-rise

Watch: Historic Bayeux Tapestry arrives at British Museum. Video, 00:01:23Watch: Historic Bayeux Tapestry arrives at British Museum

How an app in South Korea will let victims track their stalkers. Video, 00:01:19How an app in South Korea will let victims track their stalkers

What's next for Iran after the funeral of their late supreme leader? Video, 00:02:04What's next for Iran after the funeral of their late supreme leader?

Bonnie Tyler: 'I never get tired of Total Eclipse of the Heart' Video, 00:01:55Bonnie Tyler: 'I never get tired of Total Eclipse of the Heart'

Watch: We're a step closer to finding out if bees have feelings, here's why. Video, 00:00:54Watch: We're a step closer to finding out if bees have feelings, here's why

Watch: Gaza football fans watch World Cup from rubble. Video, 00:00:35Watch: Gaza football fans watch World Cup from rubble

Watch: Marine Le Pen confirms run for French presidency. Video, 00:00:10Watch: Marine Le Pen confirms run for French presidency

Watch: Farage resigns to trigger by-election he will stand in. Video, 00:01:26Watch: Farage resigns to trigger by-election he will stand in

From night shifts to the pub - where did you watch the match? Video, 00:00:58From night shifts to the pub - where did you watch the match?

Watch: Why Australia's PM apologised for 'inappropriate' Kylie comments  Video, 00:00:58Watch: Why Australia's PM apologised for 'inappropriate' Kylie comments