Not the upgrades that go straight across; you should know the F-15C right? That kind of upgrade.
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Posted by
Blue_Nighthawk
[Offline]
on 2005-02-19 at 14:24:45
I figured it out now, nevermind... All you have to do is fill the Kill Rate Bar once, and all of the upgrades become available. Hope this helps anyone else who sees it.
