<P> (not in current use) </P> <P> Separate operating agencies (SOA) were major Air Force subdivisions directly subordinate to HQ USAF and has all the "prodecural (administrative and logistical) responsibilities" of a MAJCOM . In 1991, most active SOAs changed in status to DRUs or FOAs . </P> <P> Air divisions have existed since World War II when many of the Numbered Air Divisions began as wings . There were both named and numbered divisions, mostly air divisions . Recently HQ USAF gradually inactivated or redesignated divisions recently in an effort to encourage rapid decision - making and to create a more flat organizational structure without "middle management" units, and as such air divisions are rarely used . </P> <P> The Air National Guard, often referred to as the Air Guard, is the air force militia organized by each of the fifty U.S. states, the commonwealth of Puerto Rico, the territories of Guam and the U.S. Virgin Islands, and the District of Columbia of the United States . Established under Title 10 and Title 32 of the U.S. Code, the Air National Guard is part of a state's National Guard and is divided up into units stationed in each of the 50 states and U.S. territories and operates under their respective state governor or territorial government . The Air National Guard may be called up for active duty by the state governors or territorial commanding generals to help respond to domestic emergencies and disasters, such as those caused by hurricanes, floods, and earthquakes . </P>

Air force specialty named shops that fall under the operations flight