He is at the Old Mormon Fort, which is in Freeside, on the outskirts of New Vegas. It is not a marked location on the map, just part of the Freeside area.
his in the Old Mormon Fort in freeside freeside is next to new vegas
The Main Legion force on Fallout New Vegas is located at the Fort. Which is the fully owned Legion Area throughout the game, except for Cottonwood Cove.
To begin Arcade Gannon's side quest all you have to do is hire him as a companion. He will then talk to you and he will start the quest. Arcade is located in Old Mormon Fort.
Occasionally Fallout: New Vegas will freeze, but not as frequently as Fallout 3.
Freeside is the area to the north, and to the east of New Vegas Strip. It consists of two distinct areas, one containing the Old Mormon Fort and Mick & Ralph's store, the other containing the King's den, Atomic Wrangler, Van Graff's and the entrance to the Strip.
fallout: new vegas 2 I've heard.
Fallout: New Vegas
Fallout New Vegas is the fifth installment in the Fallout series. It is for the Xbox 360, PS3, and the PC.
Fallout new Vegas
No, you can't get married in Fallout: New vegas, but you can have sex in the game :)
fallout new Vegas will be on PlayStation 3 and Xbox 360