You will receive emergency, government, and public safety alerts on your Light Phone. These alerts are used for things like severe weather warnings or amber alerts. Currently these alerts are coming through as Android notifications, outside of the Light OS, which is something we plan to re-design in a future update.
Disabling Emergency Alerts
The option to disable emergency alerts is in Settings > Notifications. This is enabled by default. (this setting is available in LightOS 294)