. >> mister alexander, mr.bagdoyan mentioned earlier a lot of good faith efforts going on around all these systems and i'm curious what steps is cms taking to determine what order they should develop a broad risk assessment and to hispoint , if you could talk about is there a fall timeline that these fraud risk assessments are going to be completed? i imagine there's a master grid so can you talk about that of the medicare programs, how they should develop in the timeline we are looking at for all these programs? >> as i mentioned, we have been and do fraud risk profiling as described for a long time. we have done in the marketplace in the exchanges, and the modeling and with each of those steps we are bringing those learnings forward to each subsequent program. i would point out each of the programs and payment systems that you would do a risk assessment on has unique peculiarities to it. the way we pay for critical action in this hospital is different than the way we pay for acute care hospitals so each prese