UFO Sighting in Leeuwarden, Friesland on 2017-02-03 17:15:00 – A black boomerang slowley flew over. Posted on February 3, 2017 by 1 UFOS 1 UFOS The #1 UFO Resource 1 UFOS - News - Books - Videos - Feeds Search for: I whas looking out the window when i saw a boomerang of lights in the sky. i saw a ufo about a year ago that looked the same as this one. 1 UFOS The #1 UFO Resource 1 UFOS - News - Books - Videos - Feeds Search for: