Millions of Texans were woken up at 4AM to an "EXTREME" level alert because one police officer was shot when he went to serve an arrest warrant to a suspected burglar at his apartment at 11pm earlier the same night. The officer recovered and was back on duty 5 weeks later. This shooting happened in one of the most remote parts of Texas, so people who were over 700 miles / 1.1 megameter / 12 hour drive away all got the notification at 4AM.
The only option Texans had would have been to disable all alerts entirely, because this was an "EXTREME" level alert.
https://www.404media.co/texas-blue-alert-emergency-notificat...