When disaster strikes, government emergency alert systems offer a simple promise: Residents will get information about nearby dangers and instructions to help them stay safe.

When disaster strikes, government emergency alert systems offer a simple promise: Residents will get information about nearby dangers and instructions to help them stay safe. As t

Evacuated residents are waiting in their cars for hours to get permission to return to Los Angeles neighborhoods devastated by the Palisades Fire, which has been burning for three weeks and destroyed thousands of homes and other structures.