Successfully complete the indicated task to unlock the corresponding 
Professional perk:

  Bling Pro: Get 200 kills while using a weapon with two attachments. Its effect 
  is two primary weapon attachments and two secondary weapon attachments. 
  Cold-Blooded Pro: Destroy 40 enemy Killstreak rewards while using the 
  Cold-Blooded perk. Its effect is undetectable by UAV, air support, sentries, 
  and thermal imaging; and no red crosshair or name when you are targeted. 
  Commando Pro: Get 20 melee kills while using the Commando perk. Its effect is 
  increased melee distance and no falling damage. 
  Danger Close Pro: Get 100 kills with explosives while using the Danger Close 
  perk. Its effect is increased explosive weapon damage and extra air support 
  damage. 
  Hardline Pro: Get 40 Killstreaks while using the Hardline perk. Its effect is 
  that Killstreak rewards require one less kill and Deathstreak rewards require 
  one less death. 
  Lightweight Pro: Run 30 Miles while using the Lightweight perk. Its effect is 
  move faster and quick aim after sprinting. 
  Marathon Pro: Run 26 Miles while using the Marathon perk. Its effect is 
  unlimited sprint and climb obstacles faster. 
  Ninja Pro: Get 50 close range kills while using the Ninja perk. Its effect is 
  invisible to heartbeat sensors and silent footsteps. 
  Scavenger Pro: Resupply 100 times while using the Scavenger perk. Its effect 
  is resupply from dead enemies and extra magazines. 
  Scrambler Pro: Get 50 close range kills while using the Scrambler perk. Its 
  effect is jam enemy radar near you and delay enemy claymore explosions. 
  Sitrep Pro: Destroy 120 detected explosives or tactical insertions while using 
  the Sitrep perk. Its effect is detect enemy explosives and tactical insertions 
  and louder enemy footsteps. 
  Sleight Of Hand Pro: Get 120 kills while using the Sleight Of Hand perk. Its 
  effect is faster reloading and aiming. 
  Steady Aim Pro: Get 80 hip fire kills while using the Steady Aim perk. Its 
  effect is increased hip fire accuracy and longer hold breath duration. 
  Stopping Power Pro: Get 300 Kills while using the Stopping Power perk. Its 
  effect is extra bullet damage and extra damage to enemy vehicles.