Comment by OutOfHere

It is not clear what as the defined purpose of the test, if it was to measure a successful entry+exit, or measure police response, or both. If measuring the police response was a purpose, the police should still have been notified, just not of the exact date when it would happen. Executing it on a random day should offset the prior awareness of the police. Secondly, it is up to the police leadership to keep it quiet.