Man, Boeing was pretty much caught red handed here. Have you seen the internal memos that have been made public. They did everything they could to conceal the fact that this new system even existed and to make sure that regulators would not require additional training the to new variant. How they escaped criminal prosecution is a detriment to society. The whole situation stemmed from greed and nothing more. The NTSB doesn’t have jurisdiction in other countries and by no means was entitled to be there. They are not the end all be all of aviation accident expertise.