Last Shift (2014) Assault on Precinct 13 meets Helter Skelter with a dash of Argento's Demons thrown in for good measure. Nowhere near as good as those, but still darn creepy. TIL: Coincidentally, Heaven's chief demon fighter, St. Michael, is the patron saint of police officers.
Your daily dose of culture courtesy of Earth vs. the Flying Saucers (1956) - "UFOs: The reliable cases are uninteresting and the interesting cases are unreliable." - Carl Sagan