"Within mere weeks of thwarting a cataclysmic electromagnetic pulse (EMP) attack against the United States, Michael Garin, former leader of the elite Omega special operations unit, discovers that Russia has triggered an ingenious and catastrophic backup plan. Garin's efforts to warn the administration of the new attack, however, fall on deaf ears. No one can believe that the Russians would initiate another strike of such magnitude so soon.
Alone again, Garin turns to three people for help: Congo Knox, a former Delta Force sniper; Dan Dwyer, the head of a sprawling military contracting firm; and Olivia Perry, an aide to the national security advisor."