Any airspace of the contiguous United States that is not an ADIZ in which the control of aircraft is required for reasons of national security.
Source FAA Pilot/Controller Glossary · checked 2026-08-25
Any airspace of the contiguous United States that is not an ADIZ in which the control of aircraft is required for reasons of national security.
Source FAA Pilot/Controller Glossary · checked 2026-08-25