Which of the following is NOT an exception to the "First Come, First Served" rule?

The concept of the "First Come, First Served" rule primarily governs the prioritization of resources or services based on the order of arrival or request. In aviation operations, certain exceptions to this rule exist due to the critical nature of the circumstances.

Commercial airliners typically do not fall under the exceptions to the "First Come, First Served" rule because they operate within a scheduled framework and do not have the same level of urgency or life-threatening implications as other categories. The operations of commercial airlines are generally managed according to their scheduled departure and arrival times and the resources available at the airport.

By contrast, emergency scenarios such as medical evacuations, presidential travel, and search and rescue missions demand immediate and prioritized attention due to their life-saving or high-profile nature, which justifies their exceptions to the standard prioritization rules. These situations require flexibility in managing air traffic and resources to address critical needs effectively. Therefore, the focus on emergency and high-importance operations is clear, emphasizing the difference between the needs of commercial airlines and those of emergency services or high-profile government travel.