Mine too, but some of these types of things--no way to prevent them. None.
We are all hypervigilant and it is good to be that way. I will not go out to get a quart of milk without my SP101 in my front jeans pocket and if I leave the house without it, I will just go back and get it.
Only the perpetrator knows what will happen, a lot of the time.
The great stories are when they are preempted and receive a dose of instant lead poisoning for their troubles.