The Pentagon has officially released three videos taken from onboard American fighter jets, claiming to show UFOs.
The footage of what the US government describes as "unidentified aerial phenomena" shows different objects in the sky.
The supposed UFOs were caught on infrared cameras and two of the videos are accompanied by commentary from the pilots.
President Donald Trump, speaking to an ABC reporter in the White House, about the newly released videos said: "They do say, and I've seen and I've read and I've heard, and I've had one very brief meeting on it, but people are saying they are seeing UFOs.
"Do I believe it? Not particularly."
The reporter adds: "Do you think you would know if there was evidence of extra terrestrials?"
Mr Trump replies: "I think my, our, great pilots would know.
"And some of them really see things that are a little bit different than in the past, so we're going to see."
The American Navy previously acknowledged that the videos existed in September of last year.
Pentagon spokeswoman Sue Gough say they are releasing them now "in order to clear up any misconceptions by the public on whether or not the footage that has been circulating was real, or whether or not there is more to the videos.
"After a thorough review, the department has determined that the authorised release of these unclassified videos does not reveal any sensitive capabilities or systems and does not impinge on any subsequent investigations of military air space incursions by unidentified aerial phenomena."
