UFO experts say they were stopped in their tracks with this footage of what appears to be a T-shaped aircraft that has the power to become invisible in seconds.
The footage shot in the city of Medford in Middlesex County, Massachusetts, was uploaded to YouTube this week and has sparked intrigue.
After shooting the footage close to the Mystic River the unnamed man immediately sent his film to Secure Team who have analysed every aspect of it.
To read more and view the video, click here.