Well a little cautious wouldn't be hurt.
I'm actually following LKS' opinion. Remember that there's always a burning churches after a "blasphemy" speeches by any world leader that making a statement against Islamic teaching.
They might not terrorist but the army better suit up and prevent any unwanted cause.
on 9/11? it was plan very carefully by the fundamentalist that take for years, which means you're right. But I don't think they will do anything big without any big plans.