If I could, there is a difference between our security levels. Our maximum security level institutions have very restricted movement and control and surveillance in the interior of these types of establishments. Therefore, there is a continuous, ongoing, higher operational cost associated with the security factors necessary in being responsible in maximum security. Maximum security also has a very strong perimeter that is protected either by fences or by a system of detection and a system of response.
A medium security level institution would have a perimeter that is just as strong as the maximum security level institution, and the interior would still have controls and barriers, but they would be less stringent than what you would find in a maximum security level institution. Therefore, again, your operational cost would be somewhat reduced as a result of the maintenance of the operation.
Similarly, in a minimum security institution, while there is a defined perimeter, there is not a containment factor, such as a fence. But there are operational costs associated with managing minimum. The reason, I think, as Mr. McCallum pointed out a bit earlier, that the costs currently reflect a higher cost in the minimums than in the mediums is simply because the number of inmates right now in minimum security is significantly down. Our maximum security facilities right now are full. Our medium security levels are currently full. Minimum is where we have bed space. So if you divide the costs associated with the average, that's why the numbers are different.