1. overseas - A specifically defined airspace for which air defense must be planned and provided. 2. United States - Airspace of defined dimensions designated by the appropriate agency within which the ready control of airborne vehicles is required in the interest of national security during an air defense emergency.
AIR DEFENSE AREA
Meaning of AIR DEFENSE AREA in English
DOD English dictionary of military terms. Английский словарь военных терминов DOD. 2012