Twenty years ago they set out to stop the the terrorist menace. And wherever terrorists were supposed to be a particle beam stabbed out of the sky to erase a building. Or two, or three, or however many were nearby. But there always seemed to be another threat, and always another beam strike. Families would go to investigate their missing relatives and find an empty lot. The civilian deaths made more terrorists which made more beam strikes. Random. Deadly. Erasing.