Alien enthusiasts were sent into a frenzy last month when a baffling UFO shaped like a snake appeared above the Mojave Desert in California.
Several weeks later, a similar object was spotted plunging from the sky before speeding off at breakneck speed over Colorado.
And now, a third "snake UFO" has been caught on camera.
The video shows a grey cylindrical shape hovering in the blue skies above Washington.
At first, it seems stretched out but then appears to move and reflect a bright beam of light.
"It's the middle of the day, no clouds, some weird cylinder-looking thing with a flashing light on the end," Athena, behind the camera, said.
"It's not a balloon, it's not a banner because there's no plane.
"It's just flat-up in the sky, it's been moving positions."
Athena sent the clip to YouTube conspiracy channel thirdphaseofmoon, who noticed a second object. See clip here.
Blake Cousins said: "I was reviewing the footage and something zooms from the right to left.
"Just as the light pulsates, something flies by.
"It's probably just a bird but it could be a UFO.
"The light pops from the cylinder as soon as the UFO flies past."
Brett added that he believed the flash of light was almost like the object was "emitting a beam of energy".

Blake Cousins believes a second UFO was spotted passing the cylindrical shape
One user claimed to have spotted a second orb flying above the cylindrical shape.
"You can see another white orb...it is only captured once but it is extremely fast," they wrote.
Another commented: "That's incredible Blake. The last cylinder-shaped object looked like it was creating some sort of energy portal."
But a third was less convinced, saying: "Swear that's just a balloon."
Comment: A sighting of something similar was posted on July 16, by Youtuber Cody Kennedy, who spotted it in Twentynine Palms, California: