Bomb Squad is a tier one perk in Call of Duty 4: Modern Warfare, Call of Duty: World at War and Call of Duty: Modern Warfare Remastered that gives a player the ability to see enemy explosives such as C4 packs, Claymore mines, Bouncing Betties and Satchel Charges, even through walls. Enemy explosives are indicated by a skull and explosion symbol above them, or in the case of Call of Duty: Modern Warfare Remastered, a glowing red identifier.