Have you ever had a unexplained run-in with a UFO or extraterrestrial?

Helena author Joan Bird has written a new book on Montana's encounters with such phenomena.

The first chapter of the book covers what may be the first ever camera footage of "flying saucers," taken in 1950 near Great Falls.

It was the "Mariana sighting," and it remains one of the most famous of all supposed UFO sightings (see below).

Bird said, "They were hovering and when he put the camera on them they were still hovering and then he said they moved across the river and behind a grain elevator and behind a water tower, so we have these objects in the landscape to be able to judge their relative speed which was very important in later analyses of the film."

To read more, click here.