Arnami live and breathe under water.  They grow up knowing that the world is made of three dimensions.  Swimming up and down is as natural as going left or right.  That actually makes them very good special navigators.  And they are some of the best fighter pilots I’ve ever had the pleasure of knowing.  I personally think they’re one of the reasons the Shang haven’t come back since The War.  Yeah.  They’re that good.