The US Department of Defense has released three declassified videos of “unexplained aerial phenomena”.
The Pentagon said it wanted to “clear up any misconceptions by the public on whether or not the footage that has been circulating was real”.
The videos had already been leaked in 2007 and 2017.
Two were published by the New York Times, while the third was leaked by an organisation co-founded by former Blink-182 singer Tom DeLonge.
After they were first leaked, some people claimed the videos showed alien unidentified flying objects (UFOs).
What’s in the videos?
According to the New York Times, a clip from 2004 was filmed by two navy fighter pilots and shows a round object hovering above the water, about 100 miles (160 km) out into the Pacific Ocean.
Two other videos filmed in 2015 show objects moving through the air, one of which is spinning. In one, a pilot is heard saying: “Look at that thing, dude! It’s rotating!”