 Phase I would have run from bid submissions in 2005 to FAST (by Sept 2008) and down-select to one contractor.Phase II would have begun after FAST and involved final design and construction of the CEV.However, this schedule was unacceptably slow to Mike Griffin, and the plan was changed such that NASA will issue a "Call for Improvements" (CFI) after the release of the ESAS for Lockheed Martin and Boeing to submit Phase II proposals.