This is a very typical sound, with its muted roaring hum. This is the first UFO related video ever uploaded by this user.

Story Source:
http://www.youtube.com/watch?v=KDoBJugoe0w
Dreamland Video podcast
To watch the FREE video version on YouTube, click here.

Subscribers, to watch the subscriber version of the video, first log in then click on Dreamland Subscriber-Only Video Podcast link.