Chopper Gunner

Chopper Gunner is a killstreak reward in Call of Duty: Modern Warfare 2 and Call of Duty: Black Ops.

Call of Duty: Modern Warfare 2
Chopper Gunner requires eleven consecutive kills (or ten with the Hardline perk enabled) to be obtained. It has a 2.61% chance of being found in a Care Package and a 7.8% chance of being found in a Emergency Airdrop. This killstreak puts the player in control of the mounted auto-cannon on a Mi-28 Havoc (Spetsnaz, OpFor, and Militia) or AH-64 Apache (Task Force 141, Army Rangers, and Navy SEALs) gunship. Hostile targets appear surrounded by red boxes on the screen (unless they are using Cold-Blooded.) The controlling player shows up as a small green cross to prevent players from killing themselves and to allow players to more easily defend themselves from death while controlling the Chopper Gunner. If a target is exposed in the open, a white square will appear around the red one to designate that player as an easy kill. By default, Chopper Gunner uses a thermal camera, similar to the Thermal Scope but the user can toggle between "white-hot" and "black-hot" modes using the action/reload button.

Shots from the Apache's/Havoc's cannon can penetrate light cover. The steady stream of shots allows the user to easily kill many enemy targets, especially in outdoor levels. The AI pilot will occasionally call out targets and fly the helicopter into positions that give the gunner a better view.

The chopper has one flare that is automatically deployed to divert guided enemy missiles. After this flare is spent, it can be hit with any missile. It is possible to shoot down a Mi-28/Apache with an unguided missile, since they are not affected by flares. It is also possible, although difficult, to shoot a guided missile from right below the chopper and if the distance is short, the flare will not have time to divert the missile. This is easier with Pave Lows, but is also possible with Chopper Gunners.

When first activated, the user sees, from the gunner's point of view, the helicopter taking off some distance from the battlefield and flying towards it. The user can begin firing almost immediately, but hitting targets at this distance is usually impossible because the gunner cannot shoot anything at such an angle.

If the user is killed while using the Chopper Gunner, they may finish using it before respawning. One exception is in Search and Destroy where it stops after the player dies, which applies to other user controlled killstreaks such as AC-130 and Predator Missile. Another exception to this rule is if the player reaches the team killing threshold in Hardcore Team Deathmatch, which causes them to suicide and sit out per the friendly fire penalty. Using a Flashbang on users of the Chopper Gunner is more useful than killing them in respawn gamemodes as it impairs their Gunner vision.

Evasion/Destruction
The Chopper Gunner is easily destroyed by Stinger missiles, as only two are needed; the helicopter has one flare. Bullets are seen easily by the Chopper Gunner, and therefore shooting at the helicopter is less useful than firing missiles (although Stinger rockets/smoke is more easily visible than bullets). The Predator Missile is also useful to take down a Chopper Gunner, as it can simply slam into it to destroy it. It is possible to destroy the Chopper Gunner with ONE missile, if the player is directly underneath as they fire a Stinger Missile at the Chopper Gunner, but this is difficult to do.

Cold-Blooded users are still somewhat easily seen on dark maps like Underpass as their body is still white, and are distinguishable from teammates because they have no name above their head.

With the KillCam, pausing the game while watching a Chopper Gunner's cam shows their position among the enemy team. This allows them to easily be killed by flanking maneuvers. Also, the users' position without pausing is seen by the green "+" symbol on the regular vision.

The user is extremely vulnerable to enemies while using the Chopper Gunner. Finding a hidden position, placing claymores, and using the Chopper Gunner to cover the player's position help when trying to achieve higher killstreaks.

Call of Duty: Black Ops
In the multiplayer reveal for Call of Duty: Black Ops, Chopper Gunner was seen as a ninth killstreak reward that could be purchased for 5000 CoD Points. The Chopper operates much like the chopper featured in "Of Their Own Accord" and "Big Brother", although it flies at a much slower speed and has other changes that balance its power. The Chopper is player-controlled, but it isn't possible to end the killstreak by killing the gunner of the Chopper. The helicopter is an UH-1 Huey. When the Chopper is called in, the player opens the helicopter´s door and grabs the minigun, with the minigun becoming player-controlled from there on in.

Call of Duty: Modern Warfare 2

 * The pilot will sometimes call out and mark targets in the language of each faction.
 * Calling in a Chopper Gunner gives the player 350 XP reward, while shooting down a Chopper Gunner rewards the player 300 XP.
 * Completing the challenge Chopper Gunner I (calling in 3 chopper gunners) will unlock the title "Get to the Choppa!" (a reference to the film "Predator").
 * Humorously, the entire gun assembly on the Apache/Havoc rotates on its mounting, clipping through the mounts that attach it to the fuselage.
 * This helicopter cannot be used while any other helicopters are in the air (except for the Care Package Little Bird), yet it can still be used if a plane is in the air such as Harriers and AC-130's. Presumably, this is because Harriers hover relatively low over the map, while AC-130's fly above the ceiling of the map, where bullets stop.
 * When a Chopper Gunner is called in by the Navy SEALs, Task Force 141 or the US Army Rangers, the announcer for either team will say "Friendly Apache incoming/inbound." When the Brazilian Militia, OpFor, or Spetsnaz call in a Chopper Gunner, the announcer will simply say "Friendly Chopper incoming/inbound," not referring to the type of helicopter, a Mi-28, although chatter sounds for both helicopters were recorded for every team, no matter what helicopter team uses.
 * In levels with tall buildings, such as Skidrow, the Chopper Gunner can actually move through some buildings.
 * The front of the Apache has a "shark teeth" design painted on the nose, resembling the AH-1 Cobras of the same paint design that were deployed in the Vietnam War.
 * Not only can Harriers shoot down the Chopper Gunner, they will target it immediately upon its entry into their field of view. Players calling in a Chopper Gunner should ensure that there are no enemy Harriers before doing so. This doesn't apply to the AC-130, which can easily shoot down enemy Harriers due to its higher flight ceiling.
 * If an enemy player throws a Stun grenade at the player controlling the Chopper, his/her vision will also be stunned or flashed with white light.
 * Chopper Gunner is the only point in Modern Warfare 2 where the AH-64 Apache is seen and used in combat. In Single Player, the player could only catch a few seconds' glimpse of it before it would leave the player's line of sight.
 * The Chopper Gunner prestige challenge is strangely named "Cobra Commander", which does not seem to make sense seeing as the chopper is not a Cobra but an Apache/Havoc. This was likely done due to the opportunity to make a reference to the lead villain from G.I. JOE - Cobra Commander - and since the Chopper Gunner killstreak offers a top-down (command style) view of the battlefield to kill enemies. The killstreak console codename is "Cobra Gunner".
 * The Chopper Gunner's firing sounds different in split-screen than online multiplayer.
 * When controlling the Chopper Gunner, in the bottom left side of the screen the caliber of the cannon is displayed as 25mm, but actually the cannons on the Apache and Havoc fire the 30mm shell.
 * On Terminal, the helicopter will sometimes fly under the map, out into the pavement.
 * On Vacant, the Chopper will usually fly through the tall buildings on the outskirts of the map. These buildings are not solid, and therefore can be shot through to kill players.
 * On Terminal, it is possible to attach C4 to the chopper by climbing on top of the building with the large propane tank and waiting for it to hover in front of the building.
 * On Highrise, the Chopper will sometimes (very rarely) fly inside and below the map. This may be annoying because the helicopter is inside the building, and the player can see all enemies, but the player cannot fire at them.
 * It is possible to get a headshot with a Chopper Gunner.
 * When the player using the Chopper Gunner attempts to shoot the enemy player, the victim tends to be dragged and pulled to the impact, stopping him to flee. This could be due to make it easier for the kill.
 * Chopper Gunner rounds will only penetrate thin materials like sheet metal, plywood, and other materials susceptible to bullet penetration. This was most likely done for balancing reasons.

Video
400pxGameplay with the Chopper Gunner