Partholon. The Partholon Series, #1

The Twin Towers are still smoldering when those odd little anthrax letters show up, killing a few people here and there. Some nutcase, everyone thinks, but everyone's wrong - it's a setup, a precursor to a massive biological attack that leaves the Northeast a quarantined wasteland. Campus policeman John Rashkil, trapped inside the Zone, chooses to keep working, adding judge and executioner to his resume.
He builds a jury-rigged life from what he can salvage and attempts to help his teenage son avoid the bear-traps set throughout this new Byzantine America. But a growing sense of futility shatters his confidence, and he is unprepared when a rabble army seeks to break quarantine and pour into the uninfected lands. Based on an Irish legend of the same name, Partholon is a brutal look at how the just and the civilized respond to anarchy.
It will delight lovers of action and military science fiction, like John Scalzi's Old Man's War or Robert Ferrigno's Prayers for the Assassin.