Wild Card: You and What Army?

 is a quest in Fallout: New Vegas. The Yes Man sends the courier to the Caesar's Legion headquarters to activate an army of dormant Securitrons.

Quick walkthrough
This quest is started by talking to the security robot Yes Man in Benny's presidential suite on the 13th Floor of the Tops Casino.

There is a locked door in the weather station building on top of The Fort that is required to be opened elsewhere. It needs the platinum chip that Benny had. It will be on the body of Caesar after you kill him in the camp. Alternatively, Caesar may give you a quest to investigate the door under the weather station and destroy whatever you find there, if you come to meet him after killing Mr. House and installing the Mk. 2 securitron program. 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.)