Yes, sir. Thank you for the question, sir.
Since pre-qualifying the five—again, one has declined to proceed—for the four we have, we have been working with them in a number of areas where we want to get their feedback and have been going back and forth with various documents. We've brought that together. They have actually until before Christmas to give us their detailed feedback on any comments they have on it. We will then be looking through the winter to update it. We will put it out to them one more time, if they have any final comments, and then the competitive RFP will be issued in spring 2019.
In 2020 the bids come in. We will complete the evaluation and we will down-select to what we call a competitive dialogue process. We've very cognizant of the risks, as you indicate them, sir, and that is why we've built in some time to go through the competitive dialogue, to actually land a contract award in 2022 at the latest. We've built in some time there because of the risks you indicate, and pretty much all of the suppliers have told us that from the contract award to the first aircraft delivery it's three years. That is their pretty consistent process, and it's what we've seen also in other projects, and that's what we're looking at. There could be some that could deliver some aircraft before that, but that is very consistent with the feedback we've received, sir.