 uh don't you you're a kindergarten teacher yeah and you position somebody at the ladder right i mean just to make sure nobody gets up there how is that possible well first of all the roof should have not been accessible at all this was this this is the first failure the first failure is is that the advanced teams that come in they do what they call they wedge all the access points so in other words if it's a if it's a a rally downtown they weld all the you know the manhole covers