The deployment room is located at the entrance/exit to the barracks, a ramp leading down from the entrance. Standard protocol involves 'green lighting' deployment, a platoon/squad surging out as one as the door slides open. Weapon and equipment racks are also located here.
The barracks is one of the most essential buildings, producing 'first-tier' units. Without other buildings, the barracks can only produce marines for 50 minerals apiece. With the academy building, the firebat can be produced for 50 minerals and 25 gas. With an academy and a science facility building with an attached covert ops add-on, the ghost can be trained for 25 minerals and 75 gas. If playing the StarCraft: Brood War expansion pack, the medic is produced here at the same cost for a firebat, and same requirements (barracks and academy). The barracks itself requires 150 minerals to be built.
Remedius Medical Systems now offers a storage facility that can be housed in the barracks itself, eliminating the need for the tech lab which would store medpacks when training and outfitting medics.
All structures repair themselves to 50% life. All structure fires are automatically put out.
This all-in-one safety system automatically dispatches robotic drones to put out any fires and perform basic repairs on damaged structures. Although these drones are effective at doing basic repairs, they do not have a strong enough AI to perform the more delicate repairs needed to restore a structure past 50% structural integrity.