I have been searching all the internets trying to find a situation where either a suspect in a hostage situation had either the room or house they were in breached and the situation still didn't go as planned (i.e. someone got killed or injured). I'm doing a research project and need some evidence that either stun/flash grenades don't ALWAYS work as they are supposed to. I would love some sort of proof of someone standing next to one and walking away on affected or at least seems to be unaffected.