Should I have a different crew for bombers than for fighters?

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There are a few crew abilities that I want to upgrade. They are called
Number of experienced gunners, Fire Accuracy, Fire Precision
These skills would only be good for bombers, right? I'm guessing they would be useless for fighters because there is only one gunner in a fighter and it is not controlled by the AI.
Also, does this mean I should have one kind of crew for a fighter and another type for a bomber?
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