Roland considered Arianna's questions for a few moments before replying, "I cannot say exactly how we obtain our information; I'm sure you understand.  I can say that we think it will be a small group, perhaps as many as half a dozen but probably less.  Most of what we learned was from observing one of their men scouting the district.  As for their targets, I don't believe they planned to attack us directly.  Likely they're targeting something else, and one of our rivals paid them into attacking our warehouse as well.  I don't know who owns the other warehouses they're attacking, so I can't speculate further on that."