We use the timelines based on the government's announcements and statements that the first ship would be in the water by 2030. From that announcement and commitment we worked backwards looking at the experience in building ships of a similar size, a different size, same mission and so on, in the Canadian context. That's how we arrived at a build-start of 2023-24. Knowing that this can fluctuate and there could be changes, we also factored in a delay. That's why we have a sensitivity analysis.
On the question of whether we had contacts with DFO, yes, we did, to ensure that we were not out in left field. We had discussions with them, first, because we needed some data and also because we needed to have some questions answered. We're not experts in everything that we do, but we strive to make the best estimates possible.