UAV Jammer is a second tier perk in Call of Duty 4: Modern Warfare that will hide a player's location from an enemy UAV Recon. UAV Jammer is unlocked at level 11. UAV Jammer will not have the same effect as a suppressor, which in contrast allows a player to shoot without appearing on the enemies' minimap as a red dot. This perk is similar to the Camouflage perk in Call of Duty: World at War. In fact, all the perk does is hide your location when the enemy team has a UAV Recon in Call of Duty 4: Modern Warfare. The player's position will still show up if they fire an unsilenced weapon (though only in Hardcore if the enemy team has an active UAV). Therefore this perk is made much more useful as a combination with a silenced weapon. This is also a title in Call of Duty: Modern Warfare 2.