before any decision to grant Milestone A approval for the program pursuant to section 4251 of this title, that identifies critical technologies and manufacturing processes that need to be matured; and

before any decision to grant Milestone B approval for the program pursuant to section 4252 of this title, any decision to enter into low-rate initial production or full-rate production, or at any other time considered appropriate by the Secretary, that includes the identification of any critical technologies or manufacturing processes that have not been successfully demonstrated in a relevant environment.