I'll pass that over to the officials to talk about exactly what we have in terms of the costs so far.
The projects are actually going quite well. I met with the Australian ambassador just yesterday. I talked about where we're at and thanked them for the work they've done.
First of all, we're progressing very well. We have five companies that are part of the process for replacing the permanent fleet, a replacement of up to 88 aircraft. When it comes to the interim as well, this is not just about purchasing the interim fleet, but how we can make that system even better. We're making sure the right investments are going into place.
I'll give you one example of this. This is a very important point, one that will help to answer your question.
For example, we had a system in place where they had proper helmets that actually modernized the system, but didn't come with the weapons systems. Now we're going to be able to have those weapons systems to make the capability of the F-18 even greater. For example, the AIM-9X missile will drastically improve things. It was great that the investment was made on the advanced helmet, but this is now going to allow us to put even greater systems on, to make the current system far more effective.