If tension between Holt-the-disciplinarian and Peralta-the-class-clown is what pushes this episode forward, it's Holt's sexual orientation that really drives that narrative. Holt came out 25 years ago, he tells Peralta and his partner, when "the NYPD was not ready for a gay captain." When diversity became advantageous for the force, police brass pushed Holt into a paper-pushing public affairs job where they could trot him out as a token gay while keeping him away from the pavement-pounding police work apparently reserved for real heterosexual men. (That kind of misogynistic and heternormative assumption gets challenged a few times in this show's pilot. "Brooklyn Nine-Nine" actually offers a legitimately diverse cast but doesn't trumpet it.) Now that he's finally been put in charge of a precinct, he doesn't want to screw it up, which is meant to explain his hardline approach to Peralta.