All of this seems to be predicated off of the idea that if Peterson had responded he would have located the shooter and successfully engaged him. There's a huge leap of logic going on that absolute failure and absolute success were the only two possible outcomes. I think this is a matter of not just proving what he didn't do, but also proving what would have happened, and don't see how that's going to happen.
I wouldn't be surprised if the 42 USC 1983 lawsuits start rolling in. What’s different here is that FDLE has determined that Peterson was a “caregiver” to the children and had a legal obligation to protect them, this isn’t a case where the plaintiff is trying to establish a special relationship anymore, it’s been done by an independent LE agency.
I feel for the families, this might feel like a little bit of closure but it’s just them getting picked up so they can slammed on the ground a little harder.