Since taking the helm at the FBI just a week before the Sept. 11, 2011, terrorist attacks, Robert Mueller has managed to avoid the limelight.
But now that he’s retiring after 12 years with the bureau, the FBI director is opening up about his service.
Most recently, NPR reports, the decorated former Marine spoke out about changes in the FBI following the attacks.
“I had been a prosecutor before, so I anticipated spending time on public corruption cases and narcotics cases and bank robberies and the like, and Sept. 11 changed all of that,” he said, NPR wrote.
But Mueller didn’t waste his time.
“He directed and implemented what is arguably the most significant change in the FBI’s 105-year history,” said John Pistole, Mueller’s former deputy and right-hand man.