Gone Fishin'

Gone Fishin' is a side quest in the Fallout: New Vegas add-on, Honest Hearts.

Quick walkthrough
Find two walkie-talkies in the cupboard at the Zion Fishing Lodge.

Return them to Daniel in preparation for the battle.

Detailed walkthrough
Search the Zion Fishing Lodge for walkie-talkies. They're inside an average locked cabinet behind the bar counter and therefore you will need a Lockpick skill of 50 to open it, or you can open it with a key located inside a box in the bathroom.