Ghost

Ghost allows players to remain undetected by UAVs. Great for Snipers and Scouts. On its Pro Version, Ghost players remain undetected by UAVs, Stealth UAVs, Thermal Scope, Undetectable by Sentry Guns and when targeted no name or crosshair will appear on attacker's HUD. However, if a Ghost Player fires an unsurpressed weapon, player will be shown on the radar. Also, killstreaks such as Support Helicopters will have a hard time finding Ghost Players.

Ghost Pro Challenges

 * Kill 20 players while they have an UAV or Advanced UAV deployed.
 * Kill 5 players after spawning from a Tactical Insertion in under 5 seconds.
 * Destroy 1 Sentry Gun.