Thank you.
When an inmate is moved to medium security, for example, the perimeters are still secure to maintain that lack of public safety risk, but the incentives for good behaviour would also encourage inmates not to attack correctional service workers. They still would have controlled limits to ensure that there's not a chance of escaping or somehow a more comfortable stay in prison. Medium security operates as a mechanism for behavioural changes, to ensure the safety of correctional workers.