Holidaymakers at Lake Tahoe, Nevada, spotted the UFO zooming across the sky and were fortunate enough to capture it on video.
The craft was moving so fast it can barely be seen in the video, but some eagle-eyed experts slowed it down to get a better look.
The unnamed person who shot the video said: “We went to Lake Tahoe for vacation and we got a tour on a boat to ride on the lake.
“I didn't see the object until we got home, as I was checking the videos this object appeared on the video with tremendous speed.”