UFO Sighting in Chatham-Kent, Ontario on June 9th 2015 – 4 objects in formation, 4th (leading) doing figure eight maneuvers, effected clouds

Hello, I am reporting this sighting for my sister and her boss. Last night (June 9th, 10pm, 2015) four white/pink starlike objects in formation were sighted above Wheatley,ONT for about three hours. Three forming a triangle and the fourth leading. The leading object was the most active, making weaving and figure eight maneuvers. These objects had a physical effect on the surrounding clouds, forming a circle of clear space around the formation. Some time after the sighting, a radio station in London,Ont (London's Best Rock FM96) shared a listeners post on Facebook, featuring two photographs of the same formation over London. Only three of the four objects were sighted at this time.