Certainly the ability to compare was one of the concerns we had. For example, the Parliamentary Budget Office calculation indicates that they were assuming a 30-year life cycle. But again, the numbers that were prepared by National Defence were taken from the numbers that they had using their 20-year life cycle.
So there is a big problem with comparability between the numbers. Again, because National Defence understood at that time that the expected life cycle was 36 years, we thought the best way for them to respond would have been to come forward with their full life cycle costing based on 36 years, especially since they knew the Parliamentary Budget Office was using a 30-year life cycle.