The pine beetle and the spruce budworm are natural. They're not exotic. They have co-evolved with the forests here and that they are off-cycle or hyperabundant doesn't make them unnatural to the system. I think that's what Darlene tried to say.
On the other hand, you have long-horned beetles or you have the emerald ash borer, which are exotic and, in those cases, from Asia.
When you're the manager of a conservation land where you want to preserve natural ecosystems, the reaction and our policy are different. We just abruptly attack the invasives and we try to manage the natural species in a different way.