Gone Fishin'

Gone Fishin' is a main quest

Detailed walkthrough
The Courier may be able to gain Joshua Graham's trust and cooperation if they seek what he needs. Search for two walkie-talkies. Follows-Chalk directs the Courier to the Zion fishing lodge. Upon entering the location, a White Legs tribal and a few geckos attack.

Inside the lodge, items can be taken from an average locked cabinet found behind the bar counter. The key to the cabinet can be found in a box in the bathroom, or the cabinet can be picked with a Lockpick skill of 50.