Air Scouts is a now-defunct program of the Boy Scouts of America (BSA). The Air Scouts program had four ranks Apprentice, Observer, Craftsman, and Ace. The Ace cloth knot and medal may still be worn by anyone who earned them before the program was dropped.
The program was established in 1941 and existed under the name Air Scouts until 1949, when it was renamed Air Explorers.
With minor changes, this program lasted until 1965, when it was fully merged into the then existing Explorer program of the BSA as a specialty called 'Aviation Explorers'.
It still exists today as part of the BSA's Learning for Life Explorer program.
Youth in the United States of America interested in non-profit organizations based around flying should also look into the Civil Air Patrol Cadet Program.