This is a huge milestone for Brian, who has portrayed Doctor and Chief Medical Examiner, Dr James Palmer since season one.
Usually, for actors the natural trajectory away from screens is to become a director, however, Brian decided to go against the mould and become a writer on NCIS.
His fans filled the comment section with messages of congratulations and support after he made the announcement.
People including Originalginged84, who commenced: ”Well you’re a great guy and have been awesome on the show, well deserved!!! Ducky will be proud.”