What all the perk pros on call of duty modern warfare 2 do?

they are designed to improve the original perks ability's for example (these are the same perks that i use and i have them all in pro):

perk 1: scavenger-pick up and use pro:+start with extra mags

enemy and friendly

ammo.(bullets grenades

etc)

or i use

perk 1:ghost -unable to be detected by pro:+unable to be seen by motion

spy planes or Blackbirds sensors and you don't have

your name in red above your

head so its asif your invisible.

perk 2:slight of hand- reload quicker. pro:+aim down sights quicker

(except for snipers)

perk 3:hacker -allows you to see enemy pro:+you can hack it for e.g.

equiptment, sentry guns you can hack a sentry

and SAM turrets from as gun so it will attack

far as the other side of the enemy's and not your

map. team.

so i hope anyone who reads this has learnt what pro perks do and thank you for reading.