The only way I know of to deal with this is to unlock the 4th sniper rifle. That rifle can 4 shot or so planes. That's basically the only tool infantry have against planes aside from the LAAT which a heavy can take out with sentry, at least on Kashyyyk.
I wish that the ion shot that the heavy gets would take out the lighter planes. It would make that skill almost useful.
It would be nice if there were at least turrets or something on battlefields that were effective anti-air. Or at the very least give us some aim assist and a "aim here" lead box like you get when shooting planes with other planes.
