Tom Clancy's Op-Center. Scorched earth

Summary: ISIS reigns supreme in huge swathes of Iraq and Syria and poses a threat to stability in the Middle East. When an American airstrike kills the ISIS leader's only son, he vows revenge. He discovers that a U.S. Navy admiral, now on duty in the Pentagon, led the strike. The ISIS leader has him kidnapped by American home-grown ISIS sympathizers. Their orders: smuggle him out of the United States and bring him to Mosul for execution. When the normal levers of U.S. domestic security can't move quickly enough to locate the hostage, the President calls on the National Crisis Management Center-- Op-Center to find the admiral and rescue him. But as the crisis drags on and it appears the admiral is hidden in a cargo shipment, already on a flight out of the country en route to Mosul, his son, a Navy SEAL, embarks on a lone-wolf mission to rescue his father. As in previous crises, Op-Center's group of twenty- and thirty-something operatives, its "Geek Tank," uses data collation programs, anticipatory intelligence algorithms, and outright hacking to stay one step ahead of a ruthless enemy.