The video, filmed over Los Angeles on Saturday, shows what has been described as an LA County Sheriffs helicopter checking out a hovering spherical object
It has been shared several times on social media and UFO and conspiracy theory websites and YouTube channel.
Tyler Glockner, who runs conspiracy theory YouTube channel Secureteam10, produced a video about the sighting.
In the short video he said a lot of people recorded it and saw it, which "validated the sighting."
This was NOT an advertising balloon. To read more and view the video, click here.