Used in Call of Duty Nazi Zombies when a zombie hits you twice in very rapid succession, usually by swinging both arms.

A perk, or perquisite, used in online multiplayer and split screen multiplayer in both Call of Duty 4: Modern Warfare, and Call of Duty: World at War. It increases the fire rate of automatic weapontry, shoutguns, and semi-automatic sniper rifles in both games. It's use is limited, however, because most players have found it unfavorable due to the fact of having to reload several more times then other perks like sleight of hand, stopping power, and juggernaut.

One of the perks in Call of Duty World at War, that makes you invincible from zombies in the co-op mode.

A perk, or perquisite, used in online multiplayer and split screen multiplayer in both Call of Duty 4: Modern Warfare, and Call of Duty: World at War. This perk is a First perk (blue). It allows the user to seek out explosive devices such as bouncing bettys and claymores on both games. Unlike some other perks in the Cod genre, this perk is not biased towards hardcore or core game modes. For example: Stopping power while great in core, is very much useless in hardcore because the players already have extremely low health in hardcore. Stopping power therefore presents a bias towards core. But as stated earlier, Bomb Squad is widely used in both types of game mode, hardcore and core.