Once again, it's a foreign military sales arrangement that we have with the U.S. Air Force, whereby we indicate to them that we want to participate in the Globemaster III sustainment partnership. They provide to us an outline of all the costs and activities included for the next five years. We sign up to that partnership, which other nations have signed as well, as partners who are using the C-17.
At the end of the five years, any of the moneys we have included as part of that agreement that are over and above what the U.S. Air Force requires to sustain the aircraft are returned to Canada, subject to audit. All of the work done under the foreign military sales agreement is audited, and we pay only the actual cost that the U.S. Air Force incurs.