Questions 71-80 are a continuation of the previous page that dealt with significant dates in Blackbird history. The challenge level is difficult. If you get these, you memorized well.
When did SR-71B #61-7956 fly its 1,000th sortie?
When was the crash of A-12 #60-6928?
When was the last A-12 crash?
When was the crash of SR-71A #61-7970?
When was the crash of SR-71A #61-7977?
When was the last flight of SR-71A #61-7959?
When was the rollout of SR-71A #61-7967?
When was the crash of SR-71A #61-7978?
When was the rollout of SR-71A #61-7959?
When was the crash of M-21 #60-6941, a mid-air collision with a D-21 drone that lead to the end of the M-21/D-21 program?