The Emergency Alert System (EAS) ... is jointly coordinated by the Federal Emergency Management Agency (FEMA), the Federal Communications Commission (FCC) and the National Oceanic and Atmospheric Administration (NOAA). The EAS regulations and standards are governed by the Public Safety and Homeland Security Bureau of the FCC.
Source?
Could be because of chemical spills, etc.
But also so Lib. Tards. are in control of it may be.