possibilities inherent in natural viruses circulating in bats in china. mark: would it be responsibility of a government agency to make sure that a lab that is getting ultimately federal dollars for this sort of research has the security and safety measures that it ought to have apparently state department didn't think it did? >> i think that's a very interesting question and probably we can't answer it quite yet. i mean, if suppose there was a virus escaped from a lab in the u.s. a lab that was funded by ninid i don't think we would immediately say unid are responsible for thane look to direction of the lab and say was he following all applicable safety rules? or say precaution so i think the responsibility lies first and foremost with the lab director and then if you wish to go one step back, in this case, you