Mw2 killstreaks

Players can select three Killstreak Rewards at a time. A player's killstreak loadout cannot be changed from class to class; instead, one loadout will be used for all classes. Killstreaks now stack(getting a higher killstreak no longer gets rid of the lower unused one, but it will not be available until after the current killstreak is used). Also, killstreaks require one less kill with the perkHardline.
■3 - UAV: Deploys a UAV to scan the map and reveal enemy locations. Now able to be shot down.
■4 - Care Package: "Air drop a random killstreak or ammo". Deploys by throwing a red smokegrenade obtained after getting a 4 killstreak. The care package can be picked up by anyone once it hits the ground, including the enemy team. The Care Package can also kill, if it lands on a player. Thepackage can contain any killstreak, excluding the nuke, Emergency Airdrop, and of course, another Care Package.
■4 - Counter-UAV: Blocks an enemy UAV and disables their radar for the duration. Thiscan also be shot down.
■5 - Sentry Gun: Allows the player to deploy an automated M5 Minigun Turret, which is dropped in an air-drop. The gun automatically fires at enemies in its line of sight, butit can be destroyed by enemy fire. Once deployed, the player who placed it can pick it back up and redeploy it somewhere else.
■5 - Predator Missile: Fires one controllable missile at a designatedtarget area. User is vulnerable during use.
■6 - Precision Airstrike: Initiates an airstrike on a targeted area much like the Airstrike in Call of Duty 4. However, the user can now control thedirection the airstrike comes from.
■7 - Harrier Strike: Deploys a small airstrike followed by a hovering harrier that will attack enemy players for a short time.
■7 - Attack Helicopter: Deploys a Hind(for Spetsnaz, Militia and OpFor teams) or a Cobra (for Task Force 141, Rangers and Navy Seal teams) armed with one minigun to attack enemy players.
■8 - Emergency Airdrop: Deploys a C-130 that...