Camp Forlorn Hope barracks
This is the sleeping quarter for the NCR troopers. Private Sexton and a few NCR troopers can be found. After finishing Three-Card Bounty, 1st Recon will move to Camp Forlorn Hope and Sergeant Bitter-Root and Corporal Betsy will be found in the barracks. There's also a Super-Duper Mart poster. The beds are owned and cannot be slept in by the Courier.
The Camp Forlorn Hope barracks appears only in Fallout: New Vegas.