National Defence did not exercise due diligence in managing the process to replace the CF-18 jets. National Defence did not appropriately consult Public Works and Government Services Canada (PWGSC) on the procurement implications of the 2006 MOU for the third phase of the JSF Program or develop an appropriate plan for managing the unique aspects of the acquisition. Problems relating to development of the F-35 were not fully communicated to decision makers, and risks presented to decision makers did not reflect the problems the JSF Program was experiencing at the time. Full life-cycle costs were understated in the estimates provided to support the government’s 2010 decision to buy the F-35. Some costs were not fully provided to parliamentarians. There was a lack of timely and complete documentation to support the procurement strategy decision.