When Agents Keen & Ressler are masquerading as local police officers to defend the venue that the President is speaking at, a campus security officer is handed a printed version of the arrest warrants for them. The pronouns for Keen on the left of the page are reused for Ressler on the right - resulting in him being referred to by the feminine pronoun 'she'.
When Reddington is supposed to be in Paris you can see a stop sign with ARRET written on it. In France stop signs have STOP written on them.