bristols and halberstas are two-seaters: their observers can fire in a 120 degrees arc centred on the back of their planes, except for a "blind spot" (that is, the hex just behind their tail)
I suggest that you read the rules carefully if you want to live a long and healthy life
also, with time, you'll notice that there are bugs (though it is not the case *here*) that are so well-established and long-standing that experienced players have started to think about them as "house rules". this gives them a little, unfair advantage over greenhorns.
get wise, browse through the forum looking for "bug reports" and you'll learn all those little foul tricks
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