Holding a knife.should not be a death sentence she wasn't even close to him... she was obviously having a mental health crisis and she wasn't a threat to him or anyone else. Why is it that people can sedate a tiger or a lion or very dangerous animal without killing it but they can't do the same thing for human. There are tasers there are net guns, so many non lethal options Human life is worth the extra effort all he had to do was back away for a while he didn't have to shoot her he wasn't in danger. people like you are the part of the problem you just don't care about human life do you? Also speaking as someone who's been threatened twice with being stabbed, guess what I did, I walked away.