And, as described, the assumptions underlying CBO's results are subject to argument. Because some of the methods used relied on aggregate relationships and historical patterns, the estimates are broad and should not be considered precise. Nor should they be compared to the formal cost estimates of the type CBO prepares for legislative proposals. I want to emphasize that CBO is not recommending an increase in funds to that level. For one thing, DoD's acquisition managers might find it difficult to spend such an increase wisely many of the items CBO included in its calculations are nowhere near ready to be bought.
Some items exist only on paper.
In other instances, the services have no plans at all for a replacement system. And CBO does not make recommendations on matters of policy. Instead, I believe this estimate is useful for the perspective it provides. Second, it establishes a basis for judging future procurement budgets. But that brings me back to my first point, Mr. Chairman.