It's a shitty situation, but one that crosses operational / procedural boundaries with potentially acting outside of training to deal with.
Was a taser the right way to resolve this? Operationally and procedurally yes it probably was. Realistically though probably not when all the potential issues are taken into account.
Police Training / Handbook would say something like "if person is armed and does not comply warn once, warn twice, remove taser, and warn and then fire.".
So officer gets in that situation, follows the procedure, and this happens. But is it fair for him to lose his job over?
However what if they acted outside of training ideals?
1. Pepper spray her - that's going to end badly as well and with a possible fall.
2. Try to restrain her - Police risk getting injured, AND "Police brutality" if shes injured or worse in the fall.
3. Toss something over her and restrain her - Police risk getting injured, AND "Police brutality" if shes injured or worse in the fall.
Unfortunately it's a situation where you have a split second to react (or maybe a little longer since she was coming at them with her zimmer frame and the knife), but still, it's not like you can go have a coffee and work out an operational plan.
If this happens in a retirement home, what ARE the operational procedures for staff meant to be?
I work in the pubic health system, Not sure what knife she had but most are plastic or made out of wood, so not sure if it was a metal knife.
Reported as a serrated steak knife. That in itself needs reviewing if elderly people with dementia have access to such knifes.