The Enemy Within [signed] [signed] [first edition]

America's largest cities are in flames. Its majestic landmarks are in ruins. Oceans and boundaries offer no protection. It is the first sophisticated, intelligently planned, and utterly ruthless terrorist campaign waged on U.S. soil. As national leaders, armies, and artificial intelligence strive to win the unconventional war, two men--once friends, now adversaries to the death--race to a decisive confrontation.