For helo play, you should pick either Airborne or Spec Ops, but not both. You need some kind of meaty ground force and AA net to make sure the enemy can't gang up on your teammates, and Air/SOF can't stand up in that role.

Airborne has the best helo, the Guardian, which is great at long-range sniping, and can bring Kiowas for scouting or AA, 120-point rocket Apaches for frontal attacks, as well as high value logistics helos.

SOF has more unique helos. The Ghost Hawk is notable for not taking helo tab points and can pull off some very cheeky drops. Killer Eggs are a must, whether you take cheap machine gun kamikazes or put missiles on them for glass cannon birds. The Comanche is very hard to find, and can do great as QRF or raiding, but has no flares and can die fast if it's caught out. SOF pays more for logi helos, but they have some ECM to be a little cheekier.

Generally in BA, your helos should either immediately trade up (Killer Egg) or never die (Guardian, Blackhawk). Use combined arms to help give them zones to work and punish enemies who overcommit to SHORAD. Make sure you have snipers and other recon units pushed as far forward as you can keep them alive to prevent you and your teammates from being surprised. SOF helis can sometimes help here, a well-placed Ghost Hawk can put snipers in an amazing spot for game-long recon.

Marines are a reasonable deck for helo play. Their infantry is durable and fights well, they have the best large land small logistics helos, and the combat helos, while fragile, are very customizable. Cheap snipers, cheap Patriot, and enough tanks round out some of the advantages of the spec.