They evolved. They weren't necessarily one complete package. Some were individual measures, and some were part of a broader group. Going from memory here, I would say there were discussions over about a year, on and off, with the shipyards to talk about a schedule and mitigation measures. It may even have been 15 months, but it was a long-term discussion.
My colleague Jody has been around longer than I have. If you have a different recollection, Jody, please correct them.