The officers did nothing legally wrong nor did they violate any procedures. If you have problem with that, demand the law be changed and see if there is enough support for it to be changed.
The cops had several options they could have chose which would have been legal and not violated “procedures” . They choose the dumbest one, the one most likely to result in violence and mayhem. But hey, two dead middle age people with no priors is just A-OK cuz they “followed procedures.”