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K.I.A. as of 2179
Sergeant R. Siwiak
was a member of the United States Colonial Marine Corps
aboard the USS Sephora
when it discovered the USS Sulaco
orbiting above Acheron (LV-426)
Sergeant Siwiak led a flamethrower unit into the Sulaco. He proved just how effective fire-based weaponary is against Xenomorphs, until Xenomorph acid punctured his fuel tank.