Christina Hendricks's husband saw a real UFO while shooting the show. It was late at night, and they were waiting for delivery. George offered to wait outside. Hendricks later said: "George comes in and he's white as a ghost and I went what happened he goes you're never going to believe this, I just saw a UFO. And I know this man so well I looked at his face and I am like: 'He saw a UFO.' Wow." He even took a photo of this.
The truth is out there. Good riddance to it.