Step by step, NASA is doing what it takes to 'fix the culture', OpEd, Sean O'Keefe, USA Today
"Of course, there are those within the agency and in the space-exploration community who still aren't convinced. USA TODAY recently reported the views of those who think NASA's culture has not been fixed. Debates have emerged, as reported Friday in The New York Times, on the methods for measuring the actions taken to meet the recommendations of the Columbia Accident Investigation Board. Such opinions show the dialogue is continuing."