When We Remembered Zion

When We Remembered Zion is challenge and an achievement/trophy for the Fallout: New Vegas add-on Honest Hearts.

Requirements
Complete the initial quest Happy Trails Expedition.

Behind the scenes

 * The achievement/trophy listed references the 137th Psalm of the Bible. This refers to verse 1: "By the rivers of Babylon we sat and wept when we remembered Zion."