What a patrol actually prevents
Most of what a patrol catches is not crime. It is the open gate, the propped fire door, the water running down a stairwell, the skip parked across an exit. Those are the findings that arrive as a photograph the next morning, and they are worth more over a year than the incidents everyone imagines when they picture a security patrol.
Logged, not asserted
Every visit is recorded with its time and its findings. A patrol you cannot audit is a patrol you are taking on trust.
