When Holt and Kevin tell Jake their debate moderator license numbers, they use the NATO phonetic alphabet. The NYPD actually uses Police Phonetic Alphabet.
In listing their top 5 moments from their first year of marriage, Amy mentions January 6th. This episode came out in 2019, two years before the January 6, 2021, riot at the United States capitol, making the importance of the date an unintentional coincidence.