You might appreciate this story from my bro-in-law who is a former psych-tech. There was one really wily guy in his institution who liked to go where he wasn't supposed to be. One time he slipped through a door that was left unattended for a few seconds, and led the techs on a merry chase through the building, finally ending up in his room, where he gleefully jumped on his bed, turned around with a big grin and shouted, "SAFETY ZONE!!!"
Would need more about the situation but the question that would be used to contextualize the relevant data would be,"how likely is he to do it again before the exit can be properly secured?"