It's not impossible. We have a range of estimates that go up to $9 billion as a range of potential outcomes, so it's quite possible that the cost ends up being $4.5 billion per polar icebreaker. Our estimate of $7.25 billion is what we believe, at this point in time, to be the most likely scenario. However, should there be strikes, another wave of the pandemic or unforeseen events in one or both of the shipyards, the costs could go up.
Experience has shown that costs tend to go up, rather than down as a project progresses, but we still believe that $7.25 billion is the most likely estimate. It doesn't mean it's the top end.