The police car that Hanson and his partner drive in starts off with 2 red lights on top. Next scene showing them driving shows that it has 2 blue lights. Later, when the car Hanson and Ioki are driving is being chased by a police car, it has 1 red light, and 1 blue light.
Kenny is loaded into the ambulance foot first. Patients are always placed head first into ambulances.
When Hanson is undercover watching someone in a restaurant, he hassles the bartender for a beer, Hanson replies with, "Right," at the end of the conversation, when his lips clearly say, "Yeah."