Danger Close (perk)

Danger Close is a tier two perk in Call of Duty: Modern Warfare 2 that increases explosive damage by multiplying it by 1.4. The pro version of this increases explosive damage from all killstreaks (not including UAV, Counter-UAV, Care Package, Emergency Airdrop, EMP and Tactical Nuke) by x1.4 and is unlocked by getting 100 kills with explosives (Claymores, Semtex, etc.) while using this perk. It replaces Sonic Boom from Call of Duty 4: Modern Warfare and Fireworks from Call of Duty: World at War.

This perk is unlocked at rank 33 and is the last tier two perk unlocked.

Trivia

 * In military terms, "Danger-Close" refers to a situation in which friendly infantry is within the .01 Percent Chance Of Incapacitation (PI) radius of a target/area marked for an artillery or air strike; specifically it is used to alert a supporting gunner (aircraft pilot dropping a bomb, helicopter gunner firing rockets, artillery crew firing shells, etc) of the friendly soldiers in the immediate vicinity of the designated target area, and that extra care must be taken to ensure the ordnance hits the target and nothing else. The radius is determined by the weapon being employed.
 * The name of this perk is likely related to various comments relating to Shepherd's tendency to order artillery dangerously close to units under his command.
 * The easiest way to achieve the Pro version of this perk is to use a grenade launcher attachment, a Thumper or RPG as your secondary gun, Semtex, C4 or claymore as your equipment and grenade launcher class with the perk One Man Army.
 * Using Danger Close on the Javelin will make the blast radius even bigger in addition to increasing its damage, greatly increasing its deadly potential.
 * Using this with Claymores and Scavenger makes a sniper's job defending their position easier. When using the Danger Close perk, a Claymore will be an effective killer instead of being an alarm.
 * Using a Stealth Bomber with Danger Close Pro on the map Rust can easily destroy the entire map and will inevitably kill everyone.
 * To unlock the 'Danger-Close Pro' perk, some players play Hardcore game modes using the SCAR-H with Grenade Launcher (as it is a one-shot-kill weapon on Hardcore mode) Thumper/RPG as they both have 2 rounds and Semtex/C4 with Scavenger to resupply. Other players play modes like Demolition or Sabotage because everyone gathers around a central point/bomb, making it easy to kill multiple people with a single explosive.
 * Danger Close Pro was very easy to obtain using the "Javelin Glitch," however this glitch was ill advised as most players found it to be annoying and "noobish," leading to bans from Xbox Live. The glitch was eventually removed in the December 11th patch.

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