We submit each of these statements of requirements to numerous levels of scrutiny, and at each progressive level the people who initially draw that statement of requirement up have to be able to reinforce or to at least withstand that challenge. At a number of these stages we've actually asked them to go back to study some things again in order to provide better analysis or better science and technology support to those specific requirements that they specify.
So in one particular instance—and I'm not sure which of the SORs it was—they went back and undertook some significant operations research analysis to understand what all the height, weight, and width requirements would be in the aircraft so that they could perform roles for which we had confidence search and rescue would require.
Until it gets to the very last stage where they ask for effective project approval, any of these things could change to make sure we're getting exactly the right specification in there.