Strange Noise in Richmond Hill, Ontario, Canada
Strange sound heard @ approx 2:30 am. The recorder first thought it was a large truck driving down the street but the noise did not stop but it got louder and louder (for about 20 minutes) and stopped at around 4:00am. This is the first time this person hears the sound, and it is not one airplane or helicopter.
It is probably a new record of the Strange Sounds from the Sky phenomenon. Really weird!