Thank you, Mr. Chair.
The Treasury Board guidelines are applied in different circumstances. When you are providing information for approval for a project, the life cycle refers to the life cycle cost of the materiel or the asset to be acquired. In the context of an aircraft or air weapons system or the air materiel that the Department of National Defence has procured even in the very recent years, the Treasury Board submission has always looked at a 20-year life cycle costing, especially with regard to maintenance, because beyond a 20-year timeframe, as I indicated in my previous testimony, it becomes very difficult. We consider it high risk to go beyond that timeframe for the purposes of costing for an acquisition.