Involuntary Manslaughter should have been the resulting charge if that's the case. I'm thinking it's likely since, as the AG said, they couldn't identify who took the fatal shot, the grand jury weren't comfortable levying any charge. Which may be the case, but from ballistics I thought that every gun left specific markings on bullets so they should be able to tell whose gun took the shot(s).
In the end, her death may have been the result of incompetence (hence the firing and $12M civil lawsuit) but during a time of racial unrest in the nation, the burden of proof was on the AG here. He answered some questions regarding the no-knock warrant (false) and Taylor being in bed (false) but even bigger questions emerged that he can't or won't answer. I also find the 32 shot to 1 shot troubling. I don't know how long it takes for three officers to take 32 shots but that wasn't addressed either.
The coming FBI investigation will be interesting.