That question lacks validating context.
According to activity in Atlanta last year the answer is generally no even if the suspect remains armed and in prior moments was in a physical altercation with police. However, if the suspect remains an imminent threat to anyone, such that they continue to point their weapon at people as they are fleeing then I would say they remain an active imminent threat and thus can be shot by law enforcement. That is an extraordinarily narrow and unlikely scenario though.
Either way it is a rush judgment call in the field and all shootings between people demand investigation. People, even police, are not above the law and are not granted special exceptions of hostility, but they are obligated to put themselves at risk for the protection of all parties which warrant additional considerations in review.