For what reason would the 108th Command Post be notified immediately?

The correct reason for notifying the 108th Command Post immediately is related to the presence of a cocked-on aircraft. A cocked-on aircraft refers to an aircraft that is armed and ready for potential combat or operational deployment, posing a significant security risk. Immediate notification to the command post is critical in such scenarios to ensure that proper safety and security protocols are enacted without delay.

Handling a cocked-on aircraft requires direct communication and coordination to manage any potential threats effectively, maintain safety for personnel, and ensure the operational readiness of the aircraft. Addressing this situation promptly is essential for maintaining the safety of the base and its surroundings, thus making this the most urgent reason for immediate notification.

In contrast, the other options pertain to routine operations or training schedules that do not necessitate the same level of immediate alertness or security response. Regular operational updates, scheduling crew training, and planning security drills are important but do not carry the immediate risk to personnel and equipment that a cocked-on aircraft does.