EMP

The EMP (ElectroMagnetic Pulse) is an unlockable killstreak reward in Call of Duty: Modern Warfare 2. Requiring a killstreak of 15, the EMP disables ALL enemy electronics. Hostile players will have no HUD, and their vision will be slightly fuzzy. Any enemy sentry guns will be destroyed. All hostile aircraft will crash. Enemy players will be unable to activate their own killstreaks while they are affected by an EMP - even the Tactical Nuke. However, if the nuke is activated before the EMP is set off, the countdown will not stop and the nuke will still detonate.

Affected weapon attachments

 * Red Dot Sight - "Red dot" disappears (exceptions - the F2000 and the TAR-21).
 * Holographic Sight - Targeting reticule disappears.
 * ACOG Scope - Red cross hairs disappear, but the black cross hairs remain.
 * Thermal Scope - Thermal vision is disabled, but crosshairs remain, essentially becomes a standard sniper scope.
 * Heartbeat Sensor - Screen will be filled with static.

Affected weapons

 * Stinger - Unable to lock onto vehicles, rendering it useless for the duration of the EMP effect.


 * Javelin - Unable to lock onto enemies or vehicles, rendering it useless for the duration of the EMP effect.


 * AT4 - Unable to lock on to enemy vehicles, though still able to fire in free aim.

Trivia

 * An EMP should realistically not have any effect on ACOG scopes. This is because they are illuminated by tritium, a radioactive isotope of hydrogen, and contain no electronics like the other optics in the game.
 * When your team gets EMP'd your announcer says, "We've been EMP'd, electronics are down." Ironically, your annoucer says this through a radio.
 * Also, if your team gets EMP'd, your announcer seems to be worried. They usually say "EMP! Our electronics are down!".
 * If the player looks outside the map immediately after an EMP is deployed (by either team), they can see a nuclear explosion identical to the one seen in Second Sun in the distant sky.
 * Claymore trip lasers still operate during the time period the EMP is in effect.
 * It is odd that setting off an EMP does not affect Semtex grenades as they appear to be detonated electronically.
 * In reality, an EMP blast would not disable electronic devices that are insensitive to excess voltage.
 * EMP will bring down enemy Aircraft (except Little Birds and C-130's.)
 * It is possible to survive a Tactical Nuke if you have EMP and Final Stand. Before the Nuke detonates, fire an EMP. When the Nuke goes off, you will Final Stand, but you still lose. This may also be possible with other killstreak rewards.