"The First Duty" is the 119th episode of the American syndicated science fiction television series Star Trek: The Next Generation, the 19th episode of the show's fifth season. From Wikipedia
Character Nick Locarno, the antagonist behind a mysterious ship attacking vessels across the Alpha Quadrant, resurfaces in the fourth season of "Star Trek: Lower Decks," marking his first canonical appearance since "The First Duty" episode of "Star Trek: TNG" – a potential nod to his behind-the-scenes history and controversy in the Star Trek franchise.
