Knowing a little bit about how government works, if they didn't have proof of what happened it is not unthinkable that they would close the immediate leak and t

Knowing a little bit about how government works, if they didn't have proof of what happened it is not unthinkable that they would close the immediate leak and then deny anything ever happened. Nobody would win in that case, because nobody competent actually verified that a fix was done. And nobody would know, either - it'd just be two parties denying the other's point of view.