Final answer:
MAJCOM supplements should be approved by the Major Command Commander within the U.S. Air Force. It is part of the day-to-day operations of the Air Force and does not require presidential approval.
Step-by-step explanation:
MAJCOM supplements should have approval from the Major Command Commander. The context of this question deals with the organizational structure of the United States military. Specifically, in the military hierarchy, major commands (MAJCOMs) are large formations or organizations within the U.S. Air Force, each with a specific area of responsibility. The Major Command Commander is in charge of such a command and is responsible for issuing any supplements or directives to their respective commands, ensuring they align with higher authority regulations and policies. While the President of the United States is the Commander-in-Chief of the armed forces, day-to-day operations and supplemental policies within individual commands do not require presidential approval but rather the consent of the respective commanders.