[quote name='ArmyOfFun']I have an anti-air class for when my team is getting hit by aircraft: Ghost Pro, Hardened Pro, Hacker Pro, Stoner, Strela, Decoy, Jammer. I'd add the anti-air killstreak if you could customize those. But yea, most of my classes have a Strela too. It's generally way more useful than the crossbow/ballistic knife.[/QUOTE]
Yeah sometimes you run into stronger teams so then its a very good idea to run an anti-air class and keep the skies clear of chopper gunners, gunships, attack heli's, etc....
I actually have a similar class to yours: Ghost Pro, Sleight of Hand Pro, Hacker Pro, Galil, Strela(obviously

), stuns, motion sensor.
As for anti-air killstreaks sometimes idk I used to run a SAM turret, but that was before I carried the Strela around. Nowadays I just make sure to always equip the BlackBird, which is the best killstreak ender around.
That reminds me yesterday I had a team raging at me, because apparently I knocked out their gunship too early. It was round 2 of CTF and their Gunship was just barely on the map, before I destroyed it. The rage that ensued later in the lobby was hilarious.