Prisoners of War

Prisoners of War is a side quest in the Fallout: New Vegas add-on, Honest Hearts. It is received simultaneously with Flight from Zion along with Retake the Bridge and Sanctity of the Dead.

Synopsis
Some Sorrows have been taken captive by the White Legs; leaving them in Zion Canyon condemns them to death.

Walkthrough

 * 1) Travel to Ranger substation Osprey.
 * 2) Kill the White Legs holding the Sorrow warriors hostage.
 * 3) Unlock the cell door using the key found in the toolbox upstairs in the substation tower. Alternatively, the cell door can be picked with at least a Lockpick of 75.