Don't be alarmed when you hear a shrill sound from your phone today — Canada is simply testing its emergency alert system.
Another reason you may not have gotten the alert was that your phone was off at the time, on airplane mode or not within the range of an active cell tower at the time. According to FEMA, the national ...
Nationwide testing is taking place during Emergency Preparedness Week, which runs from May 3 to May 9.
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