In terms of revisions to the forecast around infrastructure money, based upon the experience from 2002 up to today, one would anticipate that it's probably the easiest bet in town that there will be future lapses in infrastructure money.
At the same time, based upon our own analysis of direct program expenses and the operating line, we do have the view that most of the compression with respect to operating expenses over the next five years will have to do with the valuation around changing interest rates, and the changing valuation around employee pension benefits and other related benefits.