Note 1 CAP: Combat Air Patrol Placing battle aircraft on airborne alert in an armed state, in order to quickly respond to approaching enemy aircraft.
Note 2 DC: Direction Center The Direction Center is the interception air control based on information from radar sites, etc.

The strategy for air defense during an aerial incursion includes "detect any invading aircraft", "identify the detected aircraft", and "intercept and destroy any enemy aircraft" (launch fighters or a surface-to-air guided missile to destroy the invading target in the air). Almost all airspace around Japan is constantly monitored by the Aircraft Warning Control Force using radar and the airborne warning and control system to detect invading aircraft as quickly as possible. Next, detected aircraft is identified as a friend or foe by the automatic control and warning system, etc. When an enemy aircraft is identified, the aircraft control and warning system determines where the target should be destroyed, alerts the combat aircraft on stand-by on the ground or in the air and surface-to-air guided missile troops of the Ground and Maritime Self-Defense Force, and destroys enemy aircraft by an air controlled, guided combat aircraft, and surface-to-air guided missiles.