The U.S.S. Borealis is a destroyer- class vessel associated with the United States Navy. During the Season 10 episode, Squall (episode), Admiral John McGee, the estranged father of NCIS Special Agent Timothy McGee visited the Borealis anonymously to talk to the ship's doctor regarding Admiral McGee's stage four terminal cancer while knowing that if his suffering from cancer was made public, his career and training would have been ruined. Admiral McGee's aide, to ensure the man remained silent, then arranged for the doctor to be poisoned by a drug addicted shipman.