What type of Air Force command is immediately subordinate to a "Numbered Air Force"?

In the structure of the U.S. Air Force, a "Numbered Air Force" typically oversees multiple subordinate units, and the organization directly below it is a "Wing." Wings are the fundamental operational units in the Air Force and are responsible for carrying out missions and functions such as air combat, support, and logistics. Each wing is capable of performing a wide range of air operations and can include multiple groups and squadrons within it.

To provide a clearer context, squadrons are smaller units than wings and are typically organized around specific functions or aircraft types, whereas groups are composed of several squadrons and provide a higher level of organizational structure than a squadron but are still subordinate to a wing. A brigade, on the other hand, is a term more commonly associated with the Army's structure, not the Air Force. Therefore, understanding this hierarchy clarifies why a wing is the correct answer as the unit that is immediately subordinate to a "Numbered Air Force."