 In November 1965, Apollo program director Samuel C. Phillips had led a team that investigated and documented the causes of delivery, quality, and cost problems with Apollo prime contractor North American Aviation.Phillips and his boss George Mueller had both severely chastised North American's management for the problems and demanded corrective action.Immediately after the fire in 1967, NASA followed its established investigation protocol to identify the cause and recommend changes to prevent a recurrence, all under presidential and congressional oversight.