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This great story was consciously written to update the style of old pulp magazines like Planet Stories. Chollie and Fazio are grunts in the long war against the alien Ovoids. The Ovoids use a nasty biological weapon called a synsym, which invades its victim's nervous system in a particularly nasty way. The two soldiers have a pact: if either of them should be attacked by a synsym, the other will shoot him immediately to avoid infection. But when it comes right down to it, could you really kill your own buddy?
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