You want this one alive. There could be many more people involved. You want to know who they were in contact with. Who were influencing them. If they had help, funding, etc. If there's other attacks planned by others within the group. There could be much more at play here than we think. If they had leaders, then those leaders could be influencing others all over the country. And he may not even know if other plans are in effect, I doubt they'd tell them, but if you know his contacts you might find out. Do you want to see the NY Marthon next? Chicago? London? No, absolutely he MUST be taken alive.
This. I want to know who if anyone might have put them up to this and whether this goes a lot further than these two.