Line of Duty Firefighters - Bleake Island So, without further adieu, here's where you can find all 16 firefighters from Batman: Arkham Knight's Line of Duty side quest. We also welcome input from the Batman: Arkham Knight community, especially if you've come up with a successful strategy not listed in my guide. Below, you'll find location data for all 16 firefighters who will need the Caped Crusader's help before the end of the game, along with some tips on how you might go about locating/rescuing the firefighter in question.