You'll still see the fires this year...but they won't be as large as last year.
Also, one problem for the terrorists is that it's tough to get people to believe that you've set a big fire. "Ah, lightening did it." "Oh, that happens every year."
Such fires aren't known for killing 9/11-levels of people, either.
And actually, if my read on what we've been doing in Iraq is correct...we're going to see a major bust here in the states due to a mistake that I think the terrorists will likely make.
Or to quote Star Wars, "It's a trap!"
I just don't see al qaeda as being clever enough to figure out how we are setting them up. It's going to be a thing of great beauty, too.