Care Package

Care Package is a multiplayer killstreak reward in Call of Duty: Modern Warfare 2.

After achieving a killstreak of 4, (or 3 with the Hardline perk), the player will be given a special Smoke Grenade that emits red smoke. A helicopter drops a large crate at the point designated by the smoke. This crate can contain a full ammo restock, or any killstreak except Emergency Airdrop, a Tactical Nuke, or another Care Package. This helicopter can be shot down before dropping the care package, although it's relatively difficult to do so.

There were initially two major glitches with the Care Package, Sentry Gun, and Emergency Airdrop. While holding the smoke grenade, players would receive a large increase in movement speed, which was often combined with Marathon, Lightweight, and Commando for extremely fast knifing classes. The other glitch allowed players to have infinite smoke grenades to continuously call in whichever smoke grenade based killstreak reward they had. A patch to fix the problems was finally released on PC and PS3 on January 29, and on Xbox 360 on February 12.

Advantages and Disadvantages
Care packages are a gamble, while they may contain rewards which would otherwise require many more kills than the 4 required for a drop they may also contain less useful items including ammo resupplies. Data on the odds of the various care package rewards is available below and has been produced from the PC version it is assumed to be and highly likely that this hold for PS3 and xbox360 versions some of the figures have been confirmed by infinity ward.

Opening care pakages is almost instantaneous for the owner, however, any player may open the package (including enemies) although it will take 5 seconds.

The care package is heavy and will kill anyone it lands on or rolls onto. While this is a rare event because care packages readily bounce off walls, the care package marker can be positioned to maximise the probability it will hit someone.

Care packages are dropped from above and so may land on otherlying structures rather than falling to the ground or otherwise accessible location. As mentioned above care packages can be picked up by anyone it is therefore advisable that a isloated location is used to prevent this as the red smoke and radar will notify it's location to all players.

If the helicopter is shot down before the drop zone it will fall out where ever it is shot down, however shooting down Little Bird helicopters is very hard and provides no experience, and is therefore rarely done.

The player can kill an enemy with the care package marker by direct impact. Any kills attained through the Care Package killstreak does not count towards a player's killstreak, except if it lands or falls on an enemy, in which case that kill counts towards the killstreak of whoever called in the care package, and will also award that player the title "Droppin' Crates" if the kill is in the game winning killcam. Also, if on any prestige, killing an enemy by dropping a crate on them will give the player the title "Heads Up," regardless of whether it was in the game winning killcam or not.

Content Probabilities
The probability of any given item is as follows (according to PC code): Figures confirmed by Infinity Ward are indicated by an asterix (*).
 * 14.78% - UAV
 * 14.78% - Ammo
 * 13.04% - Counter-UAV
 * 10.43% - Sentry Gun
 * 10.43% - Predator Missile
 * 9.57% - Precision Airstrike
 * 6.09% - Harrier Airstrike
 * 6.09% - Attack Helicopter
 * 4.35% - Pave Low
 * 4.35% - Stealth Bomber
 * 2.61% - Chopper Gunner
 * 2.61% - AC-130
 * 0.87% - EMP
 * 0% - Tactical Nuke*
 * 0% - Care Package*
 * 0% - Emergency Airdrop*
 * 100.04% - Total

Trivia

 * There is no way of getting a Tactical Nuke, Emergency Airdrop, or another Care Package in a Care Package.
 * Any kills scored through the reward gained from a Care Package will not count towards earning additional killstreaks (with the exception of getting a Pave Low in a care package). However the Care package can add kills towards killstreaks if it crushes a hostile player by landing on him.
 * Though a difficult feat due to the small amount of time it spends on the map, the care package delivery helicopter can be shot down. However, no points are awarded to the player that manages to do so, but will count toward challenges that involve destroying killstreaks (I.E. Cold Blooded Pro). Care package delivery helicopters can also be shot down before they drop their load. This feat is most easily pulled off if the player positions himself on a high area with a full 360 degree, unobstructed view of the skies. The player will need to pay close attention to his map and respond quickly to the incoming delivery helicopter. If lucky, the delivery helicopter will take a longer route than normal and cross over more of the map than necessary before dropping off its care package. This gives the player an opportunity to shoot it down. When shot down with the care package still attached, the care package detaches from the helicopter and falls down. No points are awarded for this either. Having to concentrate on this one task ruins your game however, and since there are no awards it is usually never attempted by anyone. However if an EMP is detonated while the Little Bird is in the air it will be destroyed.
 * Like Tactical Insertion, the player can choose to forgo using the package, and instead use it as bait for ambushing an unsuspecting enemy. However, the player may be killed by the intended victim(s), who may then take the package for themselves, or even teammates might steal the package.Care_Package.gif
 * A player can be killed if the care package hits them when coming down.
 * If you call in 50 Care Packages, you get an emblem with a Care Package on it; the parachute is visible.
 * The killstreak icon for the Care Package sees it dropping down with a parachute attached. However in game the Little Bird drops it straight down with no parachute.
 * The radius from which players can open a care package actually forms a sphere - allowing some lucky players to capture a care package from underneath it. This can commonly be done in maps like Favela, where Care Packages can land on roofs or other structures.
 * It is generally inadvisable to use the Care Package killstreak on Hardcore game types, as particularly malicious teammates will simply kill the player and steal the package (Unless playing on one of the "Ricochet" game types). This is even more applicable towards Emergency Airdrops for the same reason.
 * A player cannot survive being crushed with a package even if the care package hits their riot shield.
 * It is generally frowned upon attempting to take a teammates care package unless they are killed before capturing it.
 * There is a nice tactic for safely obtaining the Care Package. When the player throws a marker, he or she should deploy a Tactical Insertion near it. Thus, if they are killed by the enemy, they will respawn near the Package, with high chances of killing a foe and obtaining ammo or killstreak.
 * There is a Challenge to be completed when later unlocked under Finishing Moves to drop a care package on a hostile and winning the match as per last kill.
 * If one knifes an opponent while the care package canister is in hand, the knife will still knife, but make a different noise, noticeably softer than the normal knife sound. It sounds very much like the melee sound from Call of Duty 2. (NOTE: This has been patched. It used to increase running speed and you were generally harder to hit. Now you actually use your knife, and you run your normal speed).
 * Care packages carry on to new rounds in gametypes like Capture the Flag, Search and Destroy and Demolition. Remember to watch the timer to see if there is enough time for you to retrieve your care package. If you do not have enough time save it till the next round.
 * When a player knifes while holding a care package, they bend over in a strange way.
 * The challenge "Droppin' Crates" (Obtain the Game Winning Kill by dropping a crate on an enemy) is a possible reference to the song "Droppin' Plates" by Disturbed.
 * There is a glitch where a Care Package cannot be called in. (Confirmed on PC)
 * Care Packages are indestructable, therefore they can make good cover provided no-one tries stealing it.
 * There is a small glitch where if you throw the care package as soon as the match ends you dont get XP for throwing it even though the little bird delivers the package.

Video
thumb|350px|left|A user-made montage on care packages.