Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Twelfth Air Force (Air Forces Southern) (12AF - AFSOUTH) is a numbered air force of the United States Air Force Air Combat Command (ACC). It is headquartered at Davis-Monthan Air Force Base, Arizona. The command serves as a primary conventional fighter and bomber warfighting headquarters trained and ready for worldwide employment of airpower. It is responsible for the combat readiness of 10 active-duty wings and one direct reporting unit. These subordinate commands operate more than 520 combat aircraft with more than 42,000 uniformed and civilian Airmen.