Thank you, First Minister. I know you've been a strong supporter of this project, which has been so important to my constituents, not least in your former role as finance Minister when you put forward the mutual investment model that will ensure that this project is delivered. I know there have been some concerns about the impact of delays and increased costs in dualling earlier sections of the road, and this can be set against recent reports that geological survey work on the Hirwaun to Dowlais section wasn't carried out until more than a year after procurement of contracts began. In at least one case, exploratory drilling has been postponed until construction is under way. This surely must raise some concerns about how both costs and engineering techniques have been drawn up for this section thus far and, with that in mind, what lessons has Welsh Government learnt from the dualling of the A465 section 2, and how will they be applied to the dualling of sections 5 and 6?