The observer fires at a different target from the pilot and may fire a different burst. His fire never receives the modifier for tailing. He receives the modifier for firing in the previous turn only if he was the one who fired. (Conversely, the pilot receives
the modifier only if the pilot is the one who fired.) The observer receives the modifier for deflection unless he is firing directly to his aircraft’s rear and the target aircraft is facing directly toward or away from him. The observer may fire even if his aircraft is on fire.
Hopefully this clarifies some of the questions concerning part 2 to your question, I have also aplied a bit more because I have noticed that alot of questions arise concerning observers and when they can and can't fire unless of course the bristol was flying directly away from you (but you did not specify)then there should have been hits to the tail instead.
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