A Trusted Aide

 is an unmarked quest in Fallout: New Vegas.

Quick walkthrough
Work for Caesar's Legion in order to gain access to Caesar's Legion safehouse.

Detailed walkthrough
Continue doing assigments given by Caesar's Legion members and earn their respect. Once you have reached the status of 'liked', you will be given the key to this safehouse.

When you become liked by the Legion, Lucius, leader of the Praetorian Guard, will give you a key to Caesar's Legion Safehouse. At this safe house there are multiple sets of legion faction armor and some weapons. This safehouse is made of two rooms connected by stairs.