At about 17:42 Jake reaches for his badge necklace, with his hands clearly empty. In the next shot from behind, he already has the weapon holster in his right hand, while grabbing the necklace.
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.
Boyle's hair is suddenly back to its natural color after having been dyed white and then auburn in the previous episodes. It is clearly his natural hair color as it is graying slightly, an effect which could not be achieved had he attempted to dye it back to its original color.
Terry is shown to be conversational in Japanese. It was previously established that, despite spending a year abroad in Japan, the only Japanese he ever learned was how to ask if there was a larger door he could walk through.
Jake jokingly says that the burgers on his sodium feast are turkey burgers, then corrects it to cheeseburgers. Turkey burgers refers to the type of meat used to make the burger, cheeseburger refers to the topping of cheese being included. A burger made from turkey meat could still be a cheeseburger.