Which type of wing performs a specialized mission and usually does not have aircraft or missiles assigned?

The correct answer is the Specialized Mission Wing. This type of wing is structured to carry out particular missions that often do not involve the operation of traditional aircraft or missiles. Instead, these wings focus on specialized tasks that support the overall objectives of the Air Force, such as intelligence, cyber operations, or other unique functions that can be essential to mission success.

In contrast, Support Wings typically provide various logistical or administrative services, Base Operating Wings manage the day-to-day operations of a base, and Operational Wings are equipped with aircraft and personnel specifically designed for combat operations and direct support roles. Thus, the defining characteristic of the Specialized Mission Wing lies in its focus on specialized missions, rather than flying or maintaining aircraft or missiles, which makes it distinct from the other types of wings listed.