Brotherhood Bond

 is an unmarked quest in Fallout: New Vegas.

Quick walkthrough
Location is the Hidden Valley bunker, home to the Brotherhood of Steel. Goal of this quest it to gain Brotherhood fame.

One way of achieving this is completing the quest Pistol Packing, in which you are asked by Knight Torres of the Brotherhood to retrieve the Missing laser pistol.

Upon return you will be greeted by an Initiate who lets you know about a supply of recycled energy weapon ammunition, to be restocked every 24 hours!

Keep being helpful to the Brotherhood, and it will begin to really pay off. Complete the quest Still in the Dark and you will be given the Brotherhood of Steel Safehouse key, where you can rest and relax.