thank youe andrin, you agencyte that the cdc's for toxic disease registry -- you into cape that theatsdr has serious -- challenges in responding to disease clusters. >> from experience of 20 years and being out of the philip these communities and i talked to them and as they are trying to track whether there are clusters are not, we inquire whether astr has been with them. they indicate that agency has made no such effort to find out from the community what is happening. one thing i think is important and that we think might be a flaw how we are identifying these is these registries and these groups don't come in and watch the movement of where these people argo. e going. if we find out we live in macon -- contaminated community, we move that we have lost track of where these people have gone. when people come down with cancer, they reported to state in which they reside. they don't reported to the state and where they are from. we could potentially be missing hundreds if not thousands of people because we cannot track their movements and their geographic location. i think that is import