The Air National Guard (ANG), also known as the Air Guard, is the air force militia component of each U.S. state, the District of Columbia, the commonwealth of Puerto Rico, and the territories of Guam and the U.S. Virgin Islands. It is, along with the Army National Guard, an element of the state National Guard. The state Air National Guards are under the jurisdiction of the State Governor or equivalent through the office of the State adjutant general. However, if federalized by order of the President of the United States, ANG units become an active part of the United States Air Force. They are jointly administered by the states (or equivalents) and the United States National Guard Bureau. Air National Guard organizations are organized and federally recognized in 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. Each state, the District of Columbia and the commonwealth of Puerto Rico each have a minimum of one ANG flying unit with either assigned aircraft or aircraft shared with a unit of the active duty Air Force under an "Associate" arrangement. The ANG of the territories of Guam and the Virgin Islands have no aircraft assigned and perform ground support functions. Air National Guard activities may be located on active duty air force bases, air reserve bases, naval air stations/joint reserve bases, or air national guard bases and stations which are either independent military facilities or collocated as tenants on civilian-controlled joint civil-military airports.
ANG units typically operated under Title 32 USC. However, for Title 10 USC purposes, all ANG units are operationally-gained by an active duty USAF major command (MAJCOM). ANG units of the Combat Air Forces (CAF) based in the Continental United States (CONUS), plus a single air control squadron of the Puerto Rico ANG, are gained by the Air Combat Command (ACC). Conversely, CONUS-based ANG units in the Mobility Air Forces (MAF), plus the Puerto Rico ANG's airlift wing and the Virgin Islands ANG's two support squadrons, are gained by the Air Mobility Command (AMC). The vast majority of ANG units fall under either ACC or AMC. However, there remain a few exceptions, such as the Alaska ANG, Hawaii ANG and Guam ANG, whose CAF and MAF units are operationally-gained by Pacific Air Forces (PACAF), while a smaller number of ANG units in CONUS are operationally-gained by Air Education and Training Command (AETC), Air Force Global Strike Command (AFGSC), Air Force Special Operations Command (AFSOC), Air Force Space Command (AFSPC), and U.S. Air Forces in Europe (USAFE).
Source:Wikipedia
