Call Of Duty : Modern Warfare 2
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 (Grenade launchers, RPG-7s, AT4s, Javelins and explosive Equipment like Claymore or Semtex) 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.