Thank you for the question.
I would say that, in this case, Paul Bernardo was given the harshest sentence we have in the criminal justice system, which is a life sentence. He was also designated a dangerous offender, and the sentence is the punishment.
In terms of the different security classifications, at maximum security, you have to be either high institutional adjustment, which means you require a high degree of control and supervision, or high on escape risk as well as high on public safety. If you go to minimum, you have to be low on institutional adjustment, escape risk and risk to the safety of the public. Medium includes the other types of ratings.
Obviously, maximum and medium have the same perimeter control. However, in maximum, it's strictly controlled inside as opposed to medium, where it's less controlled, but it continues to be controlled. That would be the difference between the levels of security.