Prisoners of War

Prisoners of War is a side quest in the Fallout: New Vegas add-on, Honest Hearts. This optional quest is received simultaneously with Flight from Zion.

Quick walkthrough

 * Release the Sorrows prisoners at Ranger Substation Osprey.
 * (Optional) Kill the White Legs at Ranger Substation Osprey.

Detailed walkthrough

 * Make your way up to Ranger Substation Osprey. There will be four White Legs guarding the prisoners. If you're a high enough level, one of them may be armed with an anti-materiel rifle and/or the brush gun.
 * Once you have disposed of the White Legs guards, open the cell to free the three prisoners. With a Lockpick skill of 75 or more, you can simply pick the Hard locked cell door. Otherwise, the key can be found in a toolbox inside the ranger substation tower.