Final answer:
The Air Force Association honors the 12 outstanding airmen through their annual Outstanding Airmen of the Year program.
Step-by-step explanation:
The agency that honors the 12 outstanding airmen is the **Air Force Association**. The Air Force Association is a non-profit organization dedicated to promoting the well-being of airmen and their families, as well as advocating for a strong and capable Air Force. They recognize outstanding airmen through their annual Outstanding Airmen of the Year program.