The top-secret black ops team is going into battle against a deadly threat closing in on America from all sides in this explosive military thriller.

In the Southwest, a legendary Vietnam-era aircraft disappears without a trace. On the other side of the country, a deadly shipment of nerve gas is loaded onto a secret train. Now, these two seemingly unconnected events are bringing out the Army's deep "black op" Dog Team.

The enigmatic operative "Colonel Kilroy" has been working with American Apache trackers to neutralize Iranian agents coming over the Mexican border. While Captain Steve Ireland, the grandson of a Dog Team great, is on a train bound for hell. . .From two sides of the country, one murderous, terrifying plot is closing in like a vice. Once it does, America's only hope will be precision lethal force—aimed hard into the heart of darkness . . .