I agree that if we're talking about deaths that are a "direct consequence of the occupation", then the Rand count of only combat deaths is overly restrictive. Criminal activity was rampant in both Japan and Germany following the war. While I don't have any definitive references, it's likely that several Americans were killed as a result of criminal activity (most likely due to dealings with the black market). I would consider those deaths as a "direct consequence of the occupation" due to the chaos that existed for some time after the war.

Including the incidents of servicemen being killed by jealous locals seems a bit of a stretch to me, but it can't be denied that it happened. Even in England, they used to complain that the Americans were "overpaid, oversexed, and over here."*

*The American retort to that statement was that the British were "undersexed, underpaid, and under Eisenhower." That doesn't get mentioned as often.