If you hear voices from the sky along Mill Creek Boulevard on Wednesday afternoon, don't be alarmed. It is just the Snohomish County Sheriff's office testing a new gadget.
Sometime between 4 and 6 pm on Wednesday, June 19, 2013, the Snohomish County Sheriff’s helicopter, SnoHawk 10, will fly over the Sheriff’s Office South Precinct in Mill Creek and other locations to test a long-range acoustic device called the LRAD 500XTM.
According to Lieutenant Jeff Brand, “This is a directional and audio Voice amplification system that can be used during disasters such as wildfires or flooding, when the public needs to be notified of emergency evacuations and phone or other electronic notification systems are not available.”
For about 15 seconds the SnoHawk 10 helicopter aircrew will announce something like, “This is a test, this is a test of the Emergency Notification System.”