The subway station Rosa and Terry emerge from is Queensboro Plaza station which in reality is an elevated station not an underground station.
Terry Jeffords said that his new daughter was born weighing in at over 14 lbs. While not a record, such a birth-weight is very unusual and is statistically rare. A woman once gave birth to a baby weighing in at over 13 lbs, and the mother was interviewed by the New York Post. Yet no one acted as if this birth-weight was very unusual.
Captain Holt wears his Commendation breast bar above his World Trade Center Breast Bar. When the WTC bar is worn, it is worn above all other medals, but below the American Flag bar.
Sharon (Terry's wife that just gave birth) did not look like she had just gone through any sort of ordeal. Giving birth to a 14+ lb baby would have made her at least look tired. Instead, she looked like nothing had happened.
When Frederick slams the door on Jake and Raymond, the core of the deadbolt lock pops out.
When Sharon goes into labor and the situation takes a turn for the worse, Jake asks Holt to recruit his ex-boyfriend, Frederick, who Jake just learned exists and is an OB-GYN. There are more than 5000 registered OB-GYNs in New York City, and, based on the limited information Jake had, Jake wouldn't even know if Frederick still lived in NY or how close he was to the precinct. It makes no sense for Jake to insist on contacting Holt's ex before trying to contact literally any other OB-GYN or medical professional.
When Gina tells Jake she will keep him "appraised" of the Captain's whereabouts, she should have said "apprised." "Appraised" means assessed, "apprised" means informed.