http://www.webster-dictionary.org/definition/Air%20National%20Guard
WordNet Dictionary
Noun 1. Air National Guard - a civilian reserve component of the United States Air Force that provides prompt mobilization during war and assistance during national emergencies
Synonyms: ANG
Wikipedia
United States Air National Guard Shield
Shield of the United States Air National GuardIn the US military, the Air National Guard (ANG) is a militia associated with the US Air Force (USAF). Each state, territory, and the District of Columbia has an Air National Guard. As Federally-organized militia, Air National Guard units are liable to activation by both the President of the United States and the governors of the several states.
http://www.ang.af.mil/history/
Although the Air National Guard
was not established as a separate
component of the U.S. Air Force
until 1947, National Guard
aviators have played significant
roles in all of America's wars and
most of it's major contingencies
since the beginning of the 20th
Century. Visit the pages on this
history site to explore the heritage
of American flight...as seen
through the deeds of minutemen.