Rescuing the captured crew members of Station 17 is one of the most rewarding Most Wanted side missions in Batman Arkham Knight. Completing The Line of Duty quest line requires players to navigate across Gotham City's three major islands to locate and rescue fifteen trapped firefighters along with their chief. This complete guide outlines the locations and practical combat strategies needed to free every member safely.

Finding the Firefighters on Bleake Island

Bleake Island contains six missing firefighters hidden in various industrial zones and alleyways. The first rescue occurs at Dixon Dock near the beginning of the mission to establish your investigation pattern. Other hostages are located near ACE Chemicals, the terrace garden bar in mid-Chinatown, and along the shoreline south of the Watchtower.

When approaching hostage sites on Bleake Island, rely heavily on Detective Mode to survey thug positions and weapon types. Using Fear Multi-Takedowns allows you to disable armed guards before they can harm the hostage.

Locating Hostages on Miagani Island

Miagani Island features four firefighters positioned around key landmarks and structural points. You can find crew members stationed near Mercy Bridge, the Gotham Herald building, and the base of Wayne Tower. Another firefighter is held hostage on a elevated rail platform in Kingston.

For the Kingston rail platform location, it is highly recommended to use the Remote Hacking Device to temporarily blind sentry turrets. Clearing out sniper threats first ensures a smoother ground fight when rescuing the crew.

Rescuing Crew Members on Founders Island

Founders Island holds five firefighters along with the final objective involving Chief Underhill. Search locations include Port Adams, Ryker Heights, and the underground construction areas accessible via street manholes. Some encounters on this island involve heavy armor and armed thugs operating in predator environments.

Unlocking access to certain hostage sites requires pulling down structural wall panels using the Batmobile winch. Equipping gadget upgrades like the Disruptor can disable enemy firearms and weapon crates before starting the encounter.

Freeing Chief Underhill to Complete the Quest

Once all fifteen firefighters are rescued across the three islands, Batman receives the final location of Chief Underhill. The Chief is held at the top of an unfinished building guarded by a large squad of patrolling thugs and automated sentry guns.

Utilize floor grates, explosive gel, and environmental traps to systematically eliminate guards without alerting the entire group. After securing Chief Underhill, bring him to GCPD to conclude the mission and claim your upgrade points.