Thank you, sir, for the question.
For the specific trucks we're talking about, the medium support vehicle system, as you indicate, this is the last of the phases. We did a military off-the-shelf variant some years ago, fully delivered for domestic operations. This particular variant is coming out of Mack Defense, but the final work and delivery is done by a company called Prevost in Quebec. You may recognize it from buses and other things that they do.
This particular variant is an expeditionary vehicle, so we can have an armoured cab. All the vehicles have modules that go on the back, so it's fairly complex in the context of vehicles. There are many variants, from dental labs and medical labs to workshops and transportation. It's a fairly complex system. As you indicate, this is the fourth phase. We're well into delivery now—about 1,500 vehicles to come in the next 18 months or so.
We'll then move on to some other things, and there are a number of vehicles that are more traditional, such as the commercial pattern vehicles you would recognize. We bought that on an ongoing basis. In fact, there's some money in the supplementary estimates that's given to the army, navy, air force and others to do a recapitalization of vehicles. We have a fairly large undertaking with my colleagues in Infrastructure and Environment on greening commercial pattern vehicles.
The next big one will be a competition for what's called the logistics vehicle modernization. These speak much more to, again, the older trucks. Our priority has been all the combat vehicles—light armoured vehicles, tactical armoured patrol vehicles, Leopard 2s. We've now done these medium support vehicles.
Moving into the logistics vehicle modernization that we'll be undertaking, we're looking at approximately $2 billion, from heavy vehicles—you can imagine the kind of vehicles you need for moving tanks around—all the way down to some of the vehicles you'd recognize, which we've had for a very long time. As you indicate, a number of them are overdue for replacement. Through “Strong, Secure, Engaged”, we have a drumbeat now to go through the rest of those, sir.