I want to know the answer to the following question:
In what year did low scores of black firefighters on a promotion test issued by the New Haven Fire Department ultimately halt promotions for all firefighters of any race in the city?
All the background I'm provided with is that "After the tests were scored, no black firefighters scored high enough to qualify for consideration for promotion, so the city announced that no one would be promoted.". Is that enough to answer the question?
Answer: no