isis. in a terrifying series of video, he graphically demonstrated the brutality of isis. >> you now have 72 hours. >> he was nicknamed jihady john and identified by his accent as british national, emwassy. >> they are reasonably certain that jihady john is a dead man. >> killed on the city street in raqqa, syria. killed by missiles from u.s. and british drones. >> as i say, when you're thwarted in one direction with one particular discipline, you try to compensate for it in other ways. >> like operating from the safety of space. jihady john tracked, targete and taken out, all with the help