LOS ANGELES (AP) — 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 the deadly LA wildfires and other major disasters have shown, alerts rely on a complicated chain of communication between first responders, government administrators, third-party companies and the public. Sometimes, the chain breaks. In this month’s wind-driven wildfires in Southern California, evacuation alerts for some neighborhoods came long after homes were aflame. That included the part of Altadena where most of the deaths occurred. County officials have approved an outside review of its role in the Eaton Fire and Palisades Fire alerts at the urging of residents.