Yea try to AA a lot,,
It is the easy way to get them

AA'ing is easy once you get the hang of it. just takes a little practice is all.

Pretty much. You make experts by shooting down planes or causing critical hits with
gunfire. So it's possible to load up on rapid firing HE guns and go to town on
something, but you'll usually get horribly mangled before you can earn too many
experts this way. AA therefore remains the solid choice.

ah well thanks anyway very dissapoited tho D:<

Look for original poster richardphat
Or type experts in the search engine. I have post many threads/reply about it.

And that`s the only way.