<Li> Matt Damon as Staff Sgt . Colin Sullivan <Ul> <Li> Conor Donovan as young Colin Sullivan </Li> </Ul> </Li> <Ul> <Li> Conor Donovan as young Colin Sullivan </Li> </Ul> <Li> Conor Donovan as young Colin Sullivan </Li> <Li> Jack Nicholson as Francis "Frank" Costello </Li>

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