Michael A. Black
"A CIA black-ops team and their cutting-edge drones are destroyed in a mysterious plane crash. Suddenly, world leaders and innocent victims are being assassinated one by one...by similar drones. To find the shadowy enemy, Mack Bolan must outgun and outfight mercenary defense contractors, terrorists and deep-cover traitors. But when the president of the United States becomes the next target, the Executioner races against the clock to bring the masterminds reign of slaughter to a killer end!"