I know the figures I quoted in this briefing came from the study we did. It lists all the elements that we costed: the training, the personnel, the maintenance, the repair and overhaul, the facilities. I would suspect that CRS used different sources to calculate, or different parameters, so you would have to compare what's entailed in their figure and what's entailed in ours.
On March 30th, 2010. See this statement in context.