Which question is not answered by the Article?

Why did the base commander have men from the 477th arrested?
Who gave the Tuskegee Airmen the Congressional Gold Medal?
Where was the first U.S. squadron of all Black fighter pilots trained?
When did men of the 477th sit outside the supervisors' club?

The question "When did men of the 477th sit outside the supervisors' club?" is not answered by the article.