The area of airspace over land or water, extending upward from the surface, within which the ready identification, the location, and the control of aircraft are required in the interest of national security.
a. Domestic Air Defense Identification Zone. An ADIZ within the United States along an international boundary of the United States.
b. Coastal Air Defense Identification Zone. An ADIZ over the coastal waters of the United States.
c. Distant Early Warning Identification Zone (DEWIZ.) An ADIZ over the coastal waters of the State of Alaska. ADIZ locations and operating and flight plan requirements for civil aircraft operations are specified in FAR Part 99.
*Definition: (DOD) Airspace of defined dimensions within which the ready identification, location, and control of airborne vehicles are required