Another victim of too much TVAmost certainly NO.
A more proficient police officer would have been able to remedy the situation so that it didn't result in death.
Death was the outcome and that can never be seen as a successful handling of the situation.
Once again it simply boils down to bad policing that's due to a lack of police concern for black lives.
It would be a near certainty that had the knife wielder been a white child and the intended victim a black child, the outcome would have been different and more desirable.
Americans can't understand this and so the fight to reform their police will be long, which will most likely result in police pushing the envelope on their right to kill to even greater heights.