Video from Chile is stirring up the UFO debate after an unusual object took a fly-by during an air-show.
The footage, from 2010, appears to show a 'spot' moving quickly from frame to frame, causing the engineer who spotted the aberration enough alarm that he alerted the Chilean Government.
The UFO made an appearance during an acrobatic air-show at the El Bosque Air Force Base in Santiago, and apparently went un-noticed at the time.
Whether this is because this was due to advanced alien cloaking technology, or because the object is just an artifact on the film depends on your viewpoint.
To read more and view the video, click here.