noun
Association of International Instructors (AII)
Organization name: a US YMCA diving education system founded in 1959. Often referred to by its English name or abbreviation AII.
国際指導者連盟（AII）は、YMCAのダイビング教育機関として1959年に設立された。
The Association of International Instructors (AII) was founded in 1959 as a YMCA diving education organization.
Compound of 国際 (international), 指導者 (instructor), and 連盟 (federation/association). The name is a direct translation of the English organization name.