I think it’s normal procedure in California when an evacuation is ordered for the police to go door to door making sure everyone is out. Regardless of the sirens, depending on mobile phones, which in this case did not work, is not good enough. Even if the network were running, not everyone has a phone or it’s turned off or the battery is dead. You can’t just leave those people to die. Even just driving around town with a bullhorn would have saved a lot of lives.