"Five"

"Five" is the second of three zombie maps set to appear in Call of Duty: Black Ops. The map is unlocked after finishing the campaign on any difficulty, and is set in the Pentagon.

Characters
"Five" features four significant real life figures to live in the Cold War era. They are: This marks the first time in the Call of Duty franchise that the President is a playable character, and there are two in this map at that.
 * John F. Kennedy
 * Robert McNamara
 * Fidel Castro
 * Richard Nixon

Defcon
Another major gameplay element of this map is the Defcon feature. In the main room of the Pentagon, there are a series of switches that will raise the Pentagon's 'Defcon" level. After hitting four switches, and putting the Pentagon at Defcon 5, a secret "panic room" will open up. This room contains the Pack-a-Punch machine, and the Defcon system is the only way to access the Pack-a-Punch on this map. The 5 levels of Defcon is the most likely reason this map is called Five, or it may be the fact that the pentagon has five sides.

Trivia

 * This is the only zombie map so far to include elevators.
 * This map, like Kino der Toten and Der Riese, includes a teleport system. Unlike those two, however, the player does not need to pay for trips through the teleporters, and the player can walk right into them.
 * This is also the only zombie map to take place in the United States.
 * Five, along with Shi no Numa, does not include Nazi Zombies. The zombies on this map are Pentagon workers, along with scientists.
 * In Five, every few rounds will result in the "Thief" round. Like the Hellhounds, this is a special round with no regular zombies. However, the thief can not hurt the player. The thief will chase after the player, and take the gun the player has equipped. After doing so, the thief will run away. The player can kill the thief and take their gun back, or fail and see the thief disappear. This can be excruciating in later rounds, especially if the they had a pack-a-punched gun equipped.
 * The name "Five" could be a reference to how a pentagon has five sides and the setting is the Pentagon building.