We have some differences of opinion, no doubt, between DND, which does its cost assessments, and PBO on these matters. I am really not qualified to talk about the PBO study on the F-35s and the quality of the methodology, the application of the model that was used. DND would be. But these differences are not unfamiliar when people are trying to assess very long-term, large projects of this kind.
On March 16th, 2011. See this statement in context.