When the acquisition of the F-35s was announced, we disclosed the forecast of through-life costs for the capability, which of course includes the in-service support costs. The information used by the subject matter experts who do these sorts of cost estimates came from a variety of sources—most importantly, from the U.S. government, from whom we're acquiring the capability. That same information was made available to all of the allies participating in the production, sustainment and follow-on development phase memorandum of understanding.
As everybody would be aware, earlier this week—or last week—the Parliamentary Budget Officer did an independent cost estimate. It was within a fairly narrow margin of the estimate DND disclosed in January.