Long Range Acoustic Device (LRAD) emergency siren testing throughout Southern Marin will be conducted this Saturday, May 4, 2024 at 12 PM. Residents of Southern Marin are encouraged to participate in Southern Marin Fire District's "Did You Hear It?" (DYHI) campaign. By taking advantage of the vast number of Internet users, we can get a more complete description of what people experienced, the effects of the monthly testing, and the extent of missing coverage. As a reminder, don't call 911 when y