A character with PTSD is basically in an entirely shut down state(sitting in fetal position, startle reflex in response to touch, unwilling to speak or respond) in response to a violent incident that mirrors the situation that created the PTSD in the first place. The group needs to mobilize or bad things will happen. Would there be any way to get someone in this state to come with them or would it be completely impossible? How would they be likely to respond to attempts to get them to move? I have done research on PTSD in general but I haven't been able to find anything to indicate what would happen in a situation like this, where sitting and calming down is not an option.