Which alarm code indicates that an air attack is imminent or in progress?

Alarm Code Red is the signal used to indicate that an air attack is imminent or currently taking place. This alarm is crucial for ensuring that personnel are alerted to the immediate danger, allowing them to take the necessary protective actions. The distinct sound of a wavering tone associated with this alarm serves as a clear and urgent awareness cue.

In contrast, Alarm Codes Blue, Green, and Yellow serve different purposes within the alert system. Code Blue often indicates a situation related to an emergency that is not related to imminent attack scenarios. Code Green typically signals that conditions are clear and there is no threat, while Code Yellow serves as a cautionary alert that a potential threat exists but does not indicate an immediate attack. Understanding the specific meanings of these codes is essential for effective response and safety in military operations.