Dlc not working attention support specialist

I use assault for everything. Predator Missile - Attack Helicopter - AH-6 Overwatch. I also you the Hardline perk. It's very easy to get 4 kills in a row which unlocks my predator missile. I hold on to it for one more kill then drop the missile to get the
helicopter. The nice thing about the Predator Missile is if you die whilst locating the drop it still counts toward your streak so you then get attack helicopter. If you manage to stay alive it takes 2 kills using the helicopter to unlock the overwatch. On
free for all I'm consistently getting 30 kills and less than 10 deaths.

Specialist. And only Specialist.

I bought the game two days ago and I've yet to figure out what the specialist, assault and support are even for, also can you choose per class which one you want to use? For instance putting support with my silent class and assault with my shotty class
and so on?

Personally I prefer the distraction class using kittens (hey even guys stop to look at kittens), a sweet car that can go from 0 to 60 in under 10 secs and a big red button that says "Warning. Do NOT Shoot. Contains Explosives". People WILL shoot it LOL.



In reality UAV, CUAV and SAM turret. Not as exciting as the Distraction Package but it does the job.

I got 3 classes with Support with UAV, Decoy Package and eithther Advanced UAV or EMP and 2 with assault with the default 3, 5, 7 streak reward.