Wild Card: You and What Army?

 is a quest in Fallout: New Vegas. Yes Man sends the Courier to The Fort to activate an army of dormant Securitrons.

Objectives

 * (Optional) Find Mr. House's hidden bunker, buried beneath the Legion stronghold at Fortification Hill

Walkthrough
is started by talking to Yes Man in the rear of Benny's presidential suite on the 13th Floor of the Tops Casino.

The bunker is inside the weather station at the Fort. To gain access, have Caesar give you an optional part of the quest: to find the bunker and destroy it. If you accept, he will let you enter, at which point you can either destroy the army or activate it; Caesar will assume that the rumbling of the Army activating was whatever you used to destroy it.

Option 1: Upgrade Securitrons
Traverse the Securitron Vault and enter the door labeled "Computer Room Door." It can be found up the stairs in the hallway farthest west. Insert the Platinum Chip into the Securitron Operations Console.

Option 2: Disable Reactors
To disable the reactors, simply fire one round into each of the 3 reactor modules.

Bugs

 * Caesar can glitch when you talk to him. He will tell you that he wants you to do something but the only option was "I'm done working for you".